56446979 has 2 divisors, whose sum is σ = 56446980. Its totient is φ = 56446978.

The previous prime is 56446921. The next prime is 56446993. The reversal of 56446979 is 97964465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56446979 - 2¹⁶ = 56381443 is a prime.

It is a super-2 number, since 2×56446979² = 6372522876452882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56446909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28223489 + 28223490.

It is an arithmetic number, because the mean of its divisors is an integer number (28223490).

Almost surely, 2^56446979 is an apocalyptic number.

56446979 is a deficient number, since it is larger than the sum of its proper divisors (1).

56446979 is an equidigital number, since it uses as much as digits as its factorization.

56446979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The square root of 56446979 is about 7513.1204569074. The cubic root of 56446979 is about 383.6014451152.

The spelling of 56446979 in words is "fifty-six million, four hundred forty-six thousand, nine hundred seventy-nine".