57727987 has 2 divisors, whose sum is σ = 57727988. Its totient is φ = 57727986.

The previous prime is 57727979. The next prime is 57727991. The reversal of 57727987 is 78972775.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57727987 - 2³ = 57727979 is a prime.

It is not a weakly prime, because it can be changed into another prime (57727927) 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, 28863993 + 28863994.

It is an arithmetic number, because the mean of its divisors is an integer number (28863994).

Almost surely, 2^57727987 is an apocalyptic number.

57727987 is a deficient number, since it is larger than the sum of its proper divisors (1).

57727987 is an equidigital number, since it uses as much as digits as its factorization.

57727987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728720, while the sum is 52.

The square root of 57727987 is about 7597.8935896734. The cubic root of 57727987 is about 386.4815841167.

The spelling of 57727987 in words is "fifty-seven million, seven hundred twenty-seven thousand, nine hundred eighty-seven".