57445402 has 16 divisors (see below), whose sum is σ = 99256320. Its totient is φ = 24424848.

The previous prime is 57445309. The next prime is 57445439. The reversal of 57445402 is 20454475.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14377 + ... + 17932.

It is an arithmetic number, because the mean of its divisors is an integer number (6203520).

Almost surely, 2^57445402 is an apocalyptic number.

57445402 is a deficient number, since it is larger than the sum of its proper divisors (41810918).

57445402 is a wasteful number, since it uses less digits than its factorization.

57445402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32445.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 57445402 is about 7579.2745035392. The cubic root of 57445402 is about 385.8499286862.

Adding to 57445402 its reverse (20454475), we get a palindrome (77899877).

The spelling of 57445402 in words is "fifty-seven million, four hundred forty-five thousand, four hundred two".