57148020 has 36 divisors (see below), whose sum is σ = 173349540. Its totient is φ = 15239424.

The previous prime is 57148019. The next prime is 57148037. The reversal of 57148020 is 2084175.

It can be written as a sum of positive squares in 2 ways, for example, as 24383844 + 32764176 = 4938^2 + 5724^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158565 + ... + 158924.

It is an arithmetic number, because the mean of its divisors is an integer number (4815265).

Almost surely, 2^57148020 is an apocalyptic number.

It is an amenable number.

57148020 is an abundant number, since it is smaller than the sum of its proper divisors (116201520).

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

57148020 is a wasteful number, since it uses less digits than its factorization.

57148020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317504 (or 317499 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 57148020 is about 7559.6309433728. The cubic root of 57148020 is about 385.1829568389.

The spelling of 57148020 in words is "fifty-seven million, one hundred forty-eight thousand, twenty".