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57053744402 = 21688992
BaseRepresentation
bin110101001000101010…
…110000110100010010
312110021011200111212112
4311020222300310102
51413321224310102
642113215425322
74056562553144
oct651052606422
9173234614775
1057053744402
1122218395686
12b083225242
1354c3242495
142a9347ac94
15173dc78252
hexd48ab0d12

57053744402 has 6 divisors (see below), whose sum is σ = 85581123303. Its totient is φ = 28526703302.

The previous prime is 57053744399. The next prime is 57053744411. The reversal of 57053744402 is 20444735075.

It can be written as a sum of positive squares in only one way, i.e., 28526872201 + 28526872201 = 168899^2 + 168899^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=168899.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57053744402.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 253349 + ... + 422247.

Almost surely, 257053744402 is an apocalyptic number.

57053744402 is a deficient number, since it is larger than the sum of its proper divisors (28527378901).

57053744402 is an frugal number, since it uses more digits than its factorization.

57053744402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337800 (or 168901 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 41.

The spelling of 57053744402 in words is "fifty-seven billion, fifty-three million, seven hundred forty-four thousand, four hundred two".

Divisors: 1 2 168899 337798 28526872201 57053744402