57438520 has 32 divisors (see below), whose sum is σ = 136040400. Its totient is φ = 21765888.

The previous prime is 57438509. The next prime is 57438523. The reversal of 57438520 is 2583475.

It is a happy number.

57438520 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 (57438523) 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 7 ways as a sum of consecutive naturals, for example, 37029 + ... + 38548.

Almost surely, 2^57438520 is an apocalyptic number.

It is an amenable number.

57438520 is an abundant number, since it is smaller than the sum of its proper divisors (78601880).

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

57438520 is a wasteful number, since it uses less digits than its factorization.

57438520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75607 (or 75603 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 57438520 is about 7578.8204887040. The cubic root of 57438520 is about 385.8345197056.

The spelling of 57438520 in words is "fifty-seven million, four hundred thirty-eight thousand, five hundred twenty".