56628031 has 2 divisors, whose sum is σ = 56628032. Its totient is φ = 56628030.

The previous prime is 56627959. The next prime is 56628043. The reversal of 56628031 is 13082665.

56628031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56628031 - 2¹³ = 56619839 is a prime.

It is a super-2 number, since 2×56628031² = 6413467789873922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56627984 and 56628002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56628331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28314015 + 28314016.

It is an arithmetic number, because the mean of its divisors is an integer number (28314016).

Almost surely, 2^56628031 is an apocalyptic number.

56628031 is a deficient number, since it is larger than the sum of its proper divisors (1).

56628031 is an equidigital number, since it uses as much as digits as its factorization.

56628031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 56628031 is about 7525.1598654115. The cubic root of 56628031 is about 384.0111374627.

The spelling of 56628031 in words is "fifty-six million, six hundred twenty-eight thousand, thirty-one".