57612091 has 2 divisors, whose sum is σ = 57612092. Its totient is φ = 57612090.

The previous prime is 57612089. The next prime is 57612101. The reversal of 57612091 is 19021675.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57612091 - 2¹ = 57612089 is a prime.

Together with 57612089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57612041) 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, 28806045 + 28806046.

It is an arithmetic number, because the mean of its divisors is an integer number (28806046).

Almost surely, 2^57612091 is an apocalyptic number.

57612091 is a deficient number, since it is larger than the sum of its proper divisors (1).

57612091 is an equidigital number, since it uses as much as digits as its factorization.

57612091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 57612091 is about 7590.2629071726. The cubic root of 57612091 is about 386.2227744798. Note that the first 3 decimals are identical.

The spelling of 57612091 in words is "fifty-seven million, six hundred twelve thousand, ninety-one".