57553020 has 72 divisors (see below), whose sum is σ = 199521504. Its totient is φ = 13154688.

The previous prime is 57553009. The next prime is 57553021. The reversal of 57553020 is 2035575.

It is a super-2 number, since 2×57553020² = 6624700222240800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57553021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21579 + ... + 24098.

It is an arithmetic number, because the mean of its divisors is an integer number (2771132).

Almost surely, 2^57553020 is an apocalyptic number.

It is an amenable number.

57553020 is an abundant number, since it is smaller than the sum of its proper divisors (141968484).

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

57553020 is a wasteful number, since it uses less digits than its factorization.

57553020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45699 (or 45694 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 57553020 is about 7586.3706737807. The cubic root of 57553020 is about 386.0907283127.

Adding to 57553020 its reverse (2035575), we get a palindrome (59588595).

The spelling of 57553020 in words is "fifty-seven million, five hundred fifty-three thousand, twenty".