57361987 has 2 divisors, whose sum is σ = 57361988. Its totient is φ = 57361986.

The previous prime is 57361937. The next prime is 57362009. The reversal of 57361987 is 78916375.

57361987 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 a de Polignac number, because none of the positive numbers 2^k-57361987 is a prime.

It is not a weakly prime, because it can be changed into another prime (57361937) 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, 28680993 + 28680994.

It is an arithmetic number, because the mean of its divisors is an integer number (28680994).

Almost surely, 2^57361987 is an apocalyptic number.

57361987 is a deficient number, since it is larger than the sum of its proper divisors (1).

57361987 is an equidigital number, since it uses as much as digits as its factorization.

57361987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 57361987 is about 7573.7696690618. The cubic root of 57361987 is about 385.6630772765.

The spelling of 57361987 in words is "fifty-seven million, three hundred sixty-one thousand, nine hundred eighty-seven".