57137643 has 10 divisors (see below), whose sum is σ = 85353884. Its totient is φ = 38091708.

The previous prime is 57137609. The next prime is 57137651. The reversal of 57137643 is 34673175.

57137643 is a `hidden beast` number, since 5 + 7 + 1 + 3 + 7 + 643 = 666.

It is not a de Polignac number, because 57137643 - 2⁸ = 57137387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57137598 and 57137607.

It is not an unprimeable number, because it can be changed into a prime (57137653) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 352621 + ... + 352782.

Almost surely, 2^57137643 is an apocalyptic number.

57137643 is a deficient number, since it is larger than the sum of its proper divisors (28216241).

57137643 is an equidigital number, since it uses as much as digits as its factorization.

57137643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705415 (or 705406 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 57137643 is about 7558.9445691842. The cubic root of 57137643 is about 385.1596414467.

The spelling of 57137643 in words is "fifty-seven million, one hundred thirty-seven thousand, six hundred forty-three".