56556523 has 2 divisors, whose sum is σ = 56556524. Its totient is φ = 56556522.

The previous prime is 56556491. The next prime is 56556547. The reversal of 56556523 is 32565565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56556523 - 2⁵ = 56556491 is a prime.

It is not a weakly prime, because it can be changed into another prime (56556553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28278261 + 28278262.

It is an arithmetic number, because the mean of its divisors is an integer number (28278262).

Almost surely, 2^56556523 is an apocalyptic number.

56556523 is a deficient number, since it is larger than the sum of its proper divisors (1).

56556523 is an equidigital number, since it uses as much as digits as its factorization.

56556523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135000, while the sum is 37.

The square root of 56556523 is about 7520.4071033422. The cubic root of 56556523 is about 383.8494305335.

The spelling of 56556523 in words is "fifty-six million, five hundred fifty-six thousand, five hundred twenty-three".