57550155 has 16 divisors (see below), whose sum is σ = 99163680. Its totient is φ = 28332288.

The previous prime is 57550153. The next prime is 57550187. The reversal of 57550155 is 55105575.

It is not a de Polignac number, because 57550155 - 2¹ = 57550153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57550153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147370 + ... + 147759.

It is an arithmetic number, because the mean of its divisors is an integer number (6197730).

Almost surely, 2^57550155 is an apocalyptic number.

57550155 is a deficient number, since it is larger than the sum of its proper divisors (41613525).

57550155 is a wasteful number, since it uses less digits than its factorization.

57550155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295150.

The product of its (nonzero) digits is 21875, while the sum is 33.

The square root of 57550155 is about 7586.1818459618. The cubic root of 57550155 is about 386.0843216504.

The spelling of 57550155 in words is "fifty-seven million, five hundred fifty thousand, one hundred fifty-five".