57725790 has 32 divisors (see below), whose sum is σ = 139470336. Its totient is φ = 15290400.

The previous prime is 57725749. The next prime is 57725803. The reversal of 57725790 is 9752775.

It is a super-2 number, since 2×57725790² = 6664533662248200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1842 + ... + 10901.

It is an arithmetic number, because the mean of its divisors is an integer number (4358448).

Almost surely, 2^57725790 is an apocalyptic number.

57725790 is an abundant number, since it is smaller than the sum of its proper divisors (81744546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57725790 is a wasteful number, since it uses less digits than its factorization.

57725790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12904.

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 57725790 is about 7597.7490087525. The cubic root of 57725790 is about 386.4766811753.

The spelling of 57725790 in words is "fifty-seven million, seven hundred twenty-five thousand, seven hundred ninety".