56623823 has 2 divisors, whose sum is σ = 56623824. Its totient is φ = 56623822.

The previous prime is 56623789. The next prime is 56623841. The reversal of 56623823 is 32832665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56623823 - 2⁶ = 56623759 is a prime.

It is a super-2 number, since 2×56623823² = 6412514662270658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56625823) 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, 28311911 + 28311912.

It is an arithmetic number, because the mean of its divisors is an integer number (28311912).

Almost surely, 2^56623823 is an apocalyptic number.

56623823 is a deficient number, since it is larger than the sum of its proper divisors (1).

56623823 is an equidigital number, since it uses as much as digits as its factorization.

56623823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 56623823 is about 7524.8802648281. The cubic root of 56623823 is about 384.0016253367.

It can be divided in two parts, 566 and 23823, that added together give a cube (24389 = 29³).

The spelling of 56623823 in words is "fifty-six million, six hundred twenty-three thousand, eight hundred twenty-three".