57512260 has 24 divisors (see below), whose sum is σ = 130066776. Its totient is φ = 21235200.

The previous prime is 57512251. The next prime is 57512267. The reversal of 57512260 is 6221575.

It can be written as a sum of positive squares in 4 ways, for example, as 2663424 + 54848836 = 1632^2 + 7406^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (57512267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110341 + ... + 110860.

It is an arithmetic number, because the mean of its divisors is an integer number (5419449).

Almost surely, 2^57512260 is an apocalyptic number.

It is an amenable number.

57512260 is an abundant number, since it is smaller than the sum of its proper divisors (72554516).

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

57512260 is a wasteful number, since it uses less digits than its factorization.

57512260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221223 (or 221221 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 57512260 is about 7583.6838014253. The cubic root of 57512260 is about 385.9995615090. Note that the first 3 decimals are identical.

The spelling of 57512260 in words is "fifty-seven million, five hundred twelve thousand, two hundred sixty".