56426447173 has 2 divisors, whose sum is σ = 56426447174. Its totient is φ = 56426447172.

The previous prime is 56426447131. The next prime is 56426447197. The reversal of 56426447173 is 37174462465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40538600964 + 15887846209 = 201342^2 + 126047^2 .

It is a cyclic number.

It is not a de Polignac number, because 56426447173 - 2²⁵ = 56392892741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56426447113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28213223586 + 28213223587.

It is an arithmetic number, because the mean of its divisors is an integer number (28213223587).

Almost surely, 2^56426447173 is an apocalyptic number.

It is an amenable number.

56426447173 is a deficient number, since it is larger than the sum of its proper divisors (1).

56426447173 is an equidigital number, since it uses as much as digits as its factorization.

56426447173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 49.

The spelling of 56426447173 in words is "fifty-six billion, four hundred twenty-six million, four hundred forty-seven thousand, one hundred seventy-three".