56516951 has 2 divisors, whose sum is σ = 56516952. Its totient is φ = 56516950.

The previous prime is 56516909. The next prime is 56516981. The reversal of 56516951 is 15961565.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56516951 - 2¹⁴ = 56500567 is a prime.

It is a Sophie Germain 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 (56516981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28258475 + 28258476.

It is an arithmetic number, because the mean of its divisors is an integer number (28258476).

Almost surely, 2^56516951 is an apocalyptic number.

56516951 is a deficient number, since it is larger than the sum of its proper divisors (1).

56516951 is an equidigital number, since it uses as much as digits as its factorization.

56516951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 38.

The square root of 56516951 is about 7517.7756683743. The cubic root of 56516951 is about 383.7598845187.

The spelling of 56516951 in words is "fifty-six million, five hundred sixteen thousand, nine hundred fifty-one".