57045620 has 12 divisors (see below), whose sum is σ = 119795844. Its totient is φ = 22818240.

The previous prime is 57045617. The next prime is 57045629. The reversal of 57045620 is 2654075.

It can be written as a sum of positive squares in 2 ways, for example, as 39287824 + 17757796 = 6268^2 + 4214^2 .

It is a super-2 number, since 2×57045620² = 6508405522368800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57045629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426121 + ... + 1426160.

It is an arithmetic number, because the mean of its divisors is an integer number (9982987).

Almost surely, 2^57045620 is an apocalyptic number.

It is an amenable number.

57045620 is an abundant number, since it is smaller than the sum of its proper divisors (62750224).

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

57045620 is a wasteful number, since it uses less digits than its factorization.

57045620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852290 (or 2852288 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 57045620 is about 7552.8550893023. The cubic root of 57045620 is about 384.9527574573.

Adding to 57045620 its reverse (2654075), we get a palindrome (59699695).

The spelling of 57045620 in words is "fifty-seven million, forty-five thousand, six hundred twenty".