56613979 has 2 divisors, whose sum is σ = 56613980. Its totient is φ = 56613978.

The previous prime is 56613937. The next prime is 56614013. The reversal of 56613979 is 97931665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56613979 - 2⁹ = 56613467 is a prime.

It is not a weakly prime, because it can be changed into another prime (56613079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28306989 + 28306990.

It is an arithmetic number, because the mean of its divisors is an integer number (28306990).

Almost surely, 2^56613979 is an apocalyptic number.

56613979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56613979 is an equidigital number, since it uses as much as digits as its factorization.

56613979 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 56613979 is about 7524.2261396106. The cubic root of 56613979 is about 383.9793712696.

The spelling of 56613979 in words is "fifty-six million, six hundred thirteen thousand, nine hundred seventy-nine".