56321173 has 4 divisors (see below), whose sum is σ = 56338380. Its totient is φ = 56303968.

The previous prime is 56321171. The next prime is 56321189. The reversal of 56321173 is 37112365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37112365 = 5 ⋅7422473.

It can be written as a sum of positive squares in 2 ways, for example, as 22297284 + 34023889 = 4722^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 56321173 - 2¹ = 56321171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56321171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008 + ... + 10801.

It is an arithmetic number, because the mean of its divisors is an integer number (14084595).

Almost surely, 2^56321173 is an apocalyptic number.

It is an amenable number.

56321173 is a deficient number, since it is larger than the sum of its proper divisors (17207).

56321173 is a wasteful number, since it uses less digits than its factorization.

56321173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17206.

The product of its digits is 3780, while the sum is 28.

The square root of 56321173 is about 7504.7433666982. The cubic root of 56321173 is about 383.3162496902.

It can be divided in two parts, 563 and 21173, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 56321173 in words is "fifty-six million, three hundred twenty-one thousand, one hundred seventy-three".