56315173 has 2 divisors, whose sum is σ = 56315174. Its totient is φ = 56315172.

The previous prime is 56315143. The next prime is 56315191. The reversal of 56315173 is 37151365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 20164 = 7503^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 56315173 - 2²⁵ = 22760741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56315123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28157586 + 28157587.

It is an arithmetic number, because the mean of its divisors is an integer number (28157587).

Almost surely, 2^56315173 is an apocalyptic number.

It is an amenable number.

56315173 is a deficient number, since it is larger than the sum of its proper divisors (1).

56315173 is an equidigital number, since it uses as much as digits as its factorization.

56315173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 31.

The square root of 56315173 is about 7504.3436088708. The cubic root of 56315173 is about 383.3026374076.

The spelling of 56315173 in words is "fifty-six million, three hundred fifteen thousand, one hundred seventy-three".