56939761 has 2 divisors, whose sum is σ = 56939762. Its totient is φ = 56939760.

The previous prime is 56939759. The next prime is 56939809. The reversal of 56939761 is 16793965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 11458225 = 6744^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 56939761 - 2¹ = 56939759 is a prime.

Together with 56939759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56939711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28469880 + 28469881.

It is an arithmetic number, because the mean of its divisors is an integer number (28469881).

Almost surely, 2^56939761 is an apocalyptic number.

It is an amenable number.

56939761 is a deficient number, since it is larger than the sum of its proper divisors (1).

56939761 is an equidigital number, since it uses as much as digits as its factorization.

56939761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 56939761 is about 7545.8439554499. The cubic root of 56939761 is about 384.7144923233.

The spelling of 56939761 in words is "fifty-six million, nine hundred thirty-nine thousand, seven hundred sixty-one".