57432091 has 2 divisors, whose sum is σ = 57432092. Its totient is φ = 57432090.

The previous prime is 57432077. The next prime is 57432097. The reversal of 57432091 is 19023475.

57432091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57432091 - 2⁷ = 57431963 is a prime.

It is not a weakly prime, because it can be changed into another prime (57432097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28716045 + 28716046.

It is an arithmetic number, because the mean of its divisors is an integer number (28716046).

Almost surely, 2^57432091 is an apocalyptic number.

57432091 is a deficient number, since it is larger than the sum of its proper divisors (1).

57432091 is an equidigital number, since it uses as much as digits as its factorization.

57432091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57432091 is about 7578.3963343177. The cubic root of 57432091 is about 385.8201238920.

The spelling of 57432091 in words is "fifty-seven million, four hundred thirty-two thousand, ninety-one".