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57043424257 = 439701185363
BaseRepresentation
bin110101001000000011…
…011001010000000001
312110020110021012021221
4311020003121100001
51413311104034012
642112210315041
74056406051231
oct651003312001
9173213235257
1057043424257
1122212586a36
12b07b888a81
1354c106aca1
142a91d51cc1
15173cdda507
hexd480d9401

57043424257 has 8 divisors (see below), whose sum is σ = 57255232320. Its totient is φ = 56831989200.

The previous prime is 57043424237. The next prime is 57043424261. The reversal of 57043424257 is 75242434075.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57043424257 - 235 = 22683685889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57043424237) 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, 215058 + ... + 400420.

It is an arithmetic number, because the mean of its divisors is an integer number (7156904040).

Almost surely, 257043424257 is an apocalyptic number.

It is an amenable number.

57043424257 is a deficient number, since it is larger than the sum of its proper divisors (211808063).

57043424257 is a wasteful number, since it uses less digits than its factorization.

57043424257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186503.

The product of its (nonzero) digits is 940800, while the sum is 43.

The spelling of 57043424257 in words is "fifty-seven billion, forty-three million, four hundred twenty-four thousand, two hundred fifty-seven".

Divisors: 1 439 701 185363 307739 81374357 129939463 57043424257