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57351557144 = 2371279800731
BaseRepresentation
bin110101011010011010…
…110101000000011000
312111000221001222011002
4311122122311000120
51414423444312034
642202534524132
74100140122650
oct653232650030
9174027058132
1057351557144
1122360505812
12b146b06648
13553cb5583b
142ac0c41360
151759ea3e7e
hexd5a6b5018

57351557144 has 32 divisors (see below), whose sum is σ = 122992435200. Its totient is φ = 24559990560.

The previous prime is 57351557141. The next prime is 57351557167. The reversal of 57351557144 is 44175515375.

It is a super-2 number, since 2×573515571442 (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57351557141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328742 + ... + 471989.

It is an arithmetic number, because the mean of its divisors is an integer number (3843513600).

Almost surely, 257351557144 is an apocalyptic number.

It is an amenable number.

57351557144 is an abundant number, since it is smaller than the sum of its proper divisors (65640878056).

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

57351557144 is a wasteful number, since it uses less digits than its factorization.

57351557144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802023 (or 802019 counting only the distinct ones).

The product of its digits is 1470000, while the sum is 47.

The spelling of 57351557144 in words is "fifty-seven billion, three hundred fifty-one million, five hundred fifty-seven thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 28 56 1279 2558 5116 8953 10232 17906 35812 71624 800731 1601462 3202924 5605117 6405848 11210234 22420468 44840936 1024134949 2048269898 4096539796 7168944643 8193079592 14337889286 28675778572 57351557144