57125540 has 48 divisors (see below), whose sum is σ = 123379200. Its totient is φ = 22209792.

The previous prime is 57125527. The next prime is 57125567. The reversal of 57125540 is 4552175.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119021 + ... + 119499.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 2^57125540 is an apocalyptic number.

It is an amenable number.

57125540 is an abundant number, since it is smaller than the sum of its proper divisors (66253660).

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

57125540 is a wasteful number, since it uses less digits than its factorization.

57125540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 57125540 is about 7558.1439520560. The cubic root of 57125540 is about 385.1324444532.

The spelling of 57125540 in words is "fifty-seven million, one hundred twenty-five thousand, five hundred forty".