56447959 has 2 divisors, whose sum is σ = 56447960. Its totient is φ = 56447958.

The previous prime is 56447933. The next prime is 56447981. The reversal of 56447959 is 95974465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56447959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56447999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28223979 + 28223980.

It is an arithmetic number, because the mean of its divisors is an integer number (28223980).

Almost surely, 2^56447959 is an apocalyptic number.

56447959 is a deficient number, since it is larger than the sum of its proper divisors (1).

56447959 is an equidigital number, since it uses as much as digits as its factorization.

56447959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 49.

The square root of 56447959 is about 7513.1856758635. The cubic root of 56447959 is about 383.6036650583.

The spelling of 56447959 in words is "fifty-six million, four hundred forty-seven thousand, nine hundred fifty-nine".