57489520 has 60 divisors (see below), whose sum is σ = 146943720. Its totient is φ = 20901760.

The previous prime is 57489517. The next prime is 57489533. The reversal of 57489520 is 2598475.

57489520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×57489520³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6711 + ... + 12649.

It is an arithmetic number, because the mean of its divisors is an integer number (2449062).

Almost surely, 2^57489520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57489520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73471860).

57489520 is an abundant number, since it is smaller than the sum of its proper divisors (89454200).

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

57489520 is a wasteful number, since it uses less digits than its factorization.

57489520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5974 (or 5957 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 57489520 is about 7582.1843818256. The cubic root of 57489520 is about 385.9486808379.

The spelling of 57489520 in words is "fifty-seven million, four hundred eighty-nine thousand, five hundred twenty".