57144187 has 2 divisors, whose sum is σ = 57144188. Its totient is φ = 57144186.

The previous prime is 57144173. The next prime is 57144193. The reversal of 57144187 is 78144175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57144187 - 2²³ = 48755579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57144287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572093 + 28572094.

It is an arithmetic number, because the mean of its divisors is an integer number (28572094).

Almost surely, 2^57144187 is an apocalyptic number.

57144187 is a deficient number, since it is larger than the sum of its proper divisors (1).

57144187 is an equidigital number, since it uses as much as digits as its factorization.

57144187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 57144187 is about 7559.3774214548. The cubic root of 57144187 is about 385.1743450545.

The spelling of 57144187 in words is "fifty-seven million, one hundred forty-four thousand, one hundred eighty-seven".