56401567 has 2 divisors, whose sum is σ = 56401568. Its totient is φ = 56401566.

The previous prime is 56401561. The next prime is 56401573. The reversal of 56401567 is 76510465.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (56401561) and next prime (56401573).

It is a cyclic number.

It is not a de Polignac number, because 56401567 - 2³ = 56401559 is a prime.

It is a super-2 number, since 2×56401567² = 6362273520110978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56401561) 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, 28200783 + 28200784.

It is an arithmetic number, because the mean of its divisors is an integer number (28200784).

Almost surely, 2^56401567 is an apocalyptic number.

56401567 is a deficient number, since it is larger than the sum of its proper divisors (1).

56401567 is an equidigital number, since it uses as much as digits as its factorization.

56401567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 56401567 is about 7510.0976691385. The cubic root of 56401567 is about 383.4985474771.

The spelling of 56401567 in words is "fifty-six million, four hundred one thousand, five hundred sixty-seven".