57205887 has 8 divisors (see below), whose sum is σ = 76572336. Its totient is φ = 37988352.

The previous prime is 57205871. The next prime is 57205913. The reversal of 57205887 is 78850275.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57205887 - 2⁴ = 57205871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57205387) 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, 36328 + ... + 37869.

It is an arithmetic number, because the mean of its divisors is an integer number (9571542).

Almost surely, 2^57205887 is an apocalyptic number.

57205887 is a deficient number, since it is larger than the sum of its proper divisors (19366449).

57205887 is a wasteful number, since it uses less digits than its factorization.

57205887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74457.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 57205887 is about 7563.4573443631. The cubic root of 57205887 is about 385.3129226314.

The spelling of 57205887 in words is "fifty-seven million, two hundred five thousand, eight hundred eighty-seven".