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5451253980 = 2235197487947
BaseRepresentation
bin1010001001110101…
…11000100011011100
3112001220111101122120
411010322320203130
542131010111410
62300531142540
7252041615514
oct50472704334
915056441576
105451253980
1123480aa887
121081744a50
1368b4a7293
14399da8844
1521d891570
hex144eb88dc

5451253980 has 96 divisors (see below), whose sum is σ = 15388724736. Its totient is φ = 1441794816.

The previous prime is 5451253979. The next prime is 5451253987. The reversal of 5451253980 is 893521545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451253987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5755867 + ... + 5756813.

It is an arithmetic number, because the mean of its divisors is an integer number (160299216).

Almost surely, 25451253980 is an apocalyptic number.

It is an amenable number.

5451253980 is an abundant number, since it is smaller than the sum of its proper divisors (9937470756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5451253980 is a wasteful number, since it uses less digits than its factorization.

5451253980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 1641 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 5451253980 is about 73832.6078369172. The cubic root of 5451253980 is about 1759.9438235341.

The spelling of 5451253980 in words is "five billion, four hundred fifty-one million, two hundred fifty-three thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 197 394 487 591 788 947 974 985 1182 1461 1894 1948 1970 2364 2435 2841 2922 2955 3788 3940 4735 4870 5682 5844 5910 7305 9470 9740 11364 11820 14205 14610 18940 28410 29220 56820 95939 186559 191878 287817 373118 383756 461189 479695 559677 575634 746236 922378 932795 959390 1119354 1151268 1383567 1439085 1844756 1865590 1918780 2238708 2305945 2767134 2798385 2878170 3731180 4611890 5534268 5596770 5756340 6917835 9223780 11193540 13835670 27671340 90854233 181708466 272562699 363416932 454271165 545125398 908542330 1090250796 1362813495 1817084660 2725626990 5451253980