56565031 has 2 divisors, whose sum is σ = 56565032. Its totient is φ = 56565030.

The previous prime is 56565029. The next prime is 56565037. The reversal of 56565031 is 13056565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56565031 - 2¹ = 56565029 is a prime.

It is a super-2 number, since 2×56565031² = 6399205464061922, which contains 22 as substring.

Together with 56565029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 56564984 and 56565002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56565037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282515 + 28282516.

It is an arithmetic number, because the mean of its divisors is an integer number (28282516).

Almost surely, 2^56565031 is an apocalyptic number.

56565031 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565031 is an equidigital number, since it uses as much as digits as its factorization.

56565031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 56565031 is about 7520.9727429369. The cubic root of 56565031 is about 383.8686775159.

The spelling of 56565031 in words is "fifty-six million, five hundred sixty-five thousand, thirty-one".