56490024809 has 2 divisors, whose sum is σ = 56490024810. Its totient is φ = 56490024808.

The previous prime is 56490024791. The next prime is 56490024821. The reversal of 56490024809 is 90842009465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31104613225 + 25385411584 = 176365^2 + 159328^2 .

It is a cyclic number.

It is not a de Polignac number, because 56490024809 - 2²⁰ = 56488976233 is a prime.

It is a super-2 number, since 2×56490024809² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56490024869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28245012404 + 28245012405.

It is an arithmetic number, because the mean of its divisors is an integer number (28245012405).

Almost surely, 2^56490024809 is an apocalyptic number.

It is an amenable number.

56490024809 is a deficient number, since it is larger than the sum of its proper divisors (1).

56490024809 is an equidigital number, since it uses as much as digits as its factorization.

56490024809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 56490024809 in words is "fifty-six billion, four hundred ninety million, twenty-four thousand, eight hundred nine".