56523169 has 2 divisors, whose sum is σ = 56523170. Its totient is φ = 56523168.

The previous prime is 56523163. The next prime is 56523179. The reversal of 56523169 is 96132565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 93025 = 7512^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 56523169 - 2⁷ = 56523041 is a prime.

It is a super-2 number, since 2×56523169² = 6389737267605122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56523163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28261584 + 28261585.

It is an arithmetic number, because the mean of its divisors is an integer number (28261585).

Almost surely, 2^56523169 is an apocalyptic number.

It is an amenable number.

56523169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56523169 is an equidigital number, since it uses as much as digits as its factorization.

56523169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 56523169 is about 7518.1892101755. The cubic root of 56523169 is about 383.7739577682.

The spelling of 56523169 in words is "fifty-six million, five hundred twenty-three thousand, one hundred sixty-nine".