56817623 has 2 divisors, whose sum is σ = 56817624. Its totient is φ = 56817622.

The previous prime is 56817617. The next prime is 56817647. The reversal of 56817623 is 32671865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56817623 - 2⁶ = 56817559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56817023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28408811 + 28408812.

It is an arithmetic number, because the mean of its divisors is an integer number (28408812).

Almost surely, 2^56817623 is an apocalyptic number.

56817623 is a deficient number, since it is larger than the sum of its proper divisors (1).

56817623 is an equidigital number, since it uses as much as digits as its factorization.

56817623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 56817623 is about 7537.7465465482. The cubic root of 56817623 is about 384.4392195605.

The spelling of 56817623 in words is "fifty-six million, eight hundred seventeen thousand, six hundred twenty-three".