57550331 has 2 divisors, whose sum is σ = 57550332. Its totient is φ = 57550330.

The previous prime is 57550327. The next prime is 57550357. The reversal of 57550331 is 13305575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57550331 - 2² = 57550327 is a prime.

It is a super-2 number, since 2×57550331² = 6624081196419122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57550294 and 57550303.

It is not a weakly prime, because it can be changed into another prime (57250331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28775165 + 28775166.

It is an arithmetic number, because the mean of its divisors is an integer number (28775166).

Almost surely, 2^57550331 is an apocalyptic number.

57550331 is a deficient number, since it is larger than the sum of its proper divisors (1).

57550331 is an equidigital number, since it uses as much as digits as its factorization.

57550331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 57550331 is about 7586.1934459912. The cubic root of 57550331 is about 386.0847152246.

The spelling of 57550331 in words is "fifty-seven million, five hundred fifty thousand, three hundred thirty-one".