56757730 has 32 divisors (see below), whose sum is σ = 109007856. Its totient is φ = 21202944.

The previous prime is 56757709. The next prime is 56757733. The reversal of 56757730 is 3775765.

It can be written as a sum of positive squares in 8 ways, for example, as 48399849 + 8357881 = 6957^2 + 2891^2 .

It is not an unprimeable number, because it can be changed into a prime (56757733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22072 + ... + 24508.

Almost surely, 2^56757730 is an apocalyptic number.

56757730 is a deficient number, since it is larger than the sum of its proper divisors (52250126).

56757730 is a wasteful number, since it uses less digits than its factorization.

56757730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598.

The product of its (nonzero) digits is 154350, while the sum is 40.

The square root of 56757730 is about 7533.7726273096. The cubic root of 56757730 is about 384.3040894594.

The spelling of 56757730 in words is "fifty-six million, seven hundred fifty-seven thousand, seven hundred thirty".