57947863 has 2 divisors, whose sum is σ = 57947864. Its totient is φ = 57947862.

The previous prime is 57947837. The next prime is 57947893. The reversal of 57947863 is 36874975.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57947863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57947893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28973931 + 28973932.

It is an arithmetic number, because the mean of its divisors is an integer number (28973932).

Almost surely, 2^57947863 is an apocalyptic number.

57947863 is a deficient number, since it is larger than the sum of its proper divisors (1).

57947863 is an equidigital number, since it uses as much as digits as its factorization.

57947863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 57947863 is about 7612.3493745361. The cubic root of 57947863 is about 386.9716431448.

The spelling of 57947863 in words is "fifty-seven million, nine hundred forty-seven thousand, eight hundred sixty-three".