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51102255350 = 25231172119157
BaseRepresentation
bin101111100101111011…
…101000100011110110
311212220101220112201002
4233211323220203312
51314124134132400
635250454403302
73456235001126
oct574573504366
9155811815632
1051102255350
111a743988893
129aa2060532
134a85230123
14268ac98c86
1514e1523ed5
hexbe5ee88f6

51102255350 has 48 divisors (see below), whose sum is σ = 98178466176. Its totient is φ = 19768992000.

The previous prime is 51102255287. The next prime is 51102255359. The reversal of 51102255350 is 5355220115.

It is a super-2 number, since 2×511022553502 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102255359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2657972 + ... + 2677128.

It is an arithmetic number, because the mean of its divisors is an integer number (2045384712).

Almost surely, 251102255350 is an apocalyptic number.

51102255350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51102255350 is a deficient number, since it is larger than the sum of its proper divisors (47076210826).

51102255350 is a wasteful number, since it uses less digits than its factorization.

51102255350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20921 (or 20916 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

Adding to 51102255350 its reverse (5355220115), we get a palindrome (56457475465).

The spelling of 51102255350 in words is "fifty-one billion, one hundred two million, two hundred fifty-five thousand, three hundred fifty".

Divisors: 1 2 5 10 25 31 50 62 155 310 775 1550 1721 3442 8605 17210 19157 38314 43025 53351 86050 95785 106702 191570 266755 478925 533510 593867 957850 1187734 1333775 2667550 2969335 5938670 14846675 29693350 32969197 65938394 164845985 329691970 824229925 1022045107 1648459850 2044090214 5110225535 10220451070 25551127675 51102255350