57105730 has 32 divisors (see below), whose sum is σ = 112674240. Its totient is φ = 20665920.

The previous prime is 57105701. The next prime is 57105733. The reversal of 57105730 is 3750175.

It is a super-2 number, since 2×57105730² = 6522128797665800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57105733) 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, 24057 + ... + 26323.

It is an arithmetic number, because the mean of its divisors is an integer number (3521070).

Almost surely, 2^57105730 is an apocalyptic number.

57105730 is a deficient number, since it is larger than the sum of its proper divisors (55568510).

57105730 is a wasteful number, since it uses less digits than its factorization.

57105730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 3675, while the sum is 28.

The square root of 57105730 is about 7556.8333314954. The cubic root of 57105730 is about 385.0879205513.

The spelling of 57105730 in words is "fifty-seven million, one hundred five thousand, seven hundred thirty".