56309867 has 2 divisors, whose sum is σ = 56309868. Its totient is φ = 56309866.

The previous prime is 56309849. The next prime is 56309881. The reversal of 56309867 is 76890365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56309867 - 2¹⁸ = 56047723 is a prime.

It is a super-2 number, since 2×56309867² = 6341602243115378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56309837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28154933 + 28154934.

It is an arithmetic number, because the mean of its divisors is an integer number (28154934).

Almost surely, 2^56309867 is an apocalyptic number.

56309867 is a deficient number, since it is larger than the sum of its proper divisors (1).

56309867 is an equidigital number, since it uses as much as digits as its factorization.

56309867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 56309867 is about 7503.9900719551. The cubic root of 56309867 is about 383.2905988068.

The spelling of 56309867 in words is "fifty-six million, three hundred nine thousand, eight hundred sixty-seven".