56636431 has 2 divisors, whose sum is σ = 56636432. Its totient is φ = 56636430.

The previous prime is 56636413. The next prime is 56636441. The reversal of 56636431 is 13463665.

Together with previous prime (56636413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56636431 - 2⁵ = 56636399 is a prime.

It is a super-2 number, since 2×56636431² = 6415370632835522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56636441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28318215 + 28318216.

It is an arithmetic number, because the mean of its divisors is an integer number (28318216).

Almost surely, 2^56636431 is an apocalyptic number.

56636431 is a deficient number, since it is larger than the sum of its proper divisors (1).

56636431 is an equidigital number, since it uses as much as digits as its factorization.

56636431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 56636431 is about 7525.7179723931. The cubic root of 56636431 is about 384.0301241378.

The spelling of 56636431 in words is "fifty-six million, six hundred thirty-six thousand, four hundred thirty-one".