57244687 has 2 divisors, whose sum is σ = 57244688. Its totient is φ = 57244686.

The previous prime is 57244669. The next prime is 57244697. The reversal of 57244687 is 78644275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57244687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57244667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28622343 + 28622344.

It is an arithmetic number, because the mean of its divisors is an integer number (28622344).

Almost surely, 2^57244687 is an apocalyptic number.

57244687 is a deficient number, since it is larger than the sum of its proper divisors (1).

57244687 is an equidigital number, since it uses as much as digits as its factorization.

57244687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 43.

The square root of 57244687 is about 7566.0218741423. The cubic root of 57244687 is about 385.4000160144.

The spelling of 57244687 in words is "fifty-seven million, two hundred forty-four thousand, six hundred eighty-seven".