57553240 has 16 divisors (see below), whose sum is σ = 129494880. Its totient is φ = 23021280.

The previous prime is 57553229. The next prime is 57553247. The reversal of 57553240 is 4235575.

57553240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57553247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719376 + ... + 719455.

It is an arithmetic number, because the mean of its divisors is an integer number (8093430).

Almost surely, 2^57553240 is an apocalyptic number.

It is an amenable number.

57553240 is an abundant number, since it is smaller than the sum of its proper divisors (71941640).

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

57553240 is a wasteful number, since it uses less digits than its factorization.

57553240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438842 (or 1438838 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 57553240 is about 7586.3851734538. The cubic root of 57553240 is about 386.0912202640.

The spelling of 57553240 in words is "fifty-seven million, five hundred fifty-three thousand, two hundred forty".