56567911 has 2 divisors, whose sum is σ = 56567912. Its totient is φ = 56567910.

The previous prime is 56567887. The next prime is 56567941. The reversal of 56567911 is 11976565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56567911 - 2¹³ = 56559719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56567941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283955 + 28283956.

It is an arithmetic number, because the mean of its divisors is an integer number (28283956).

Almost surely, 2^56567911 is an apocalyptic number.

56567911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56567911 is an equidigital number, since it uses as much as digits as its factorization.

56567911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 40.

The square root of 56567911 is about 7521.1642050948. The cubic root of 56567911 is about 383.8751922772.

The spelling of 56567911 in words is "fifty-six million, five hundred sixty-seven thousand, nine hundred eleven".