57404540 has 12 divisors (see below), whose sum is σ = 120549576. Its totient is φ = 22961808.

The previous prime is 57404539. The next prime is 57404561. The reversal of 57404540 is 4540475.

It is a super-2 number, since 2×57404540² = 6590562425223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435094 + ... + 1435133.

It is an arithmetic number, because the mean of its divisors is an integer number (10045798).

Almost surely, 2^57404540 is an apocalyptic number.

It is an amenable number.

57404540 is an abundant number, since it is smaller than the sum of its proper divisors (63145036).

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

57404540 is a wasteful number, since it uses less digits than its factorization.

57404540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870236 (or 2870234 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 57404540 is about 7576.5783834129. The cubic root of 57404540 is about 385.7584195368.

The spelling of 57404540 in words is "fifty-seven million, four hundred four thousand, five hundred forty".