53399173 has 4 divisors (see below), whose sum is σ = 53628588. Its totient is φ = 53169760.

The previous prime is 53399161. The next prime is 53399183. The reversal of 53399173 is 37199335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37199335 = 5 ⋅7439867.

It can be written as a sum of positive squares in 2 ways, for example, as 28965924 + 24433249 = 5382^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 53399173 - 2⁵ = 53399141 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 (53399113) 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, 114358 + ... + 114823.

It is an arithmetic number, because the mean of its divisors is an integer number (13407147).

Almost surely, 2^53399173 is an apocalyptic number.

It is an amenable number.

53399173 is a deficient number, since it is larger than the sum of its proper divisors (229415).

53399173 is a wasteful number, since it uses less digits than its factorization.

53399173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229414.

The product of its digits is 76545, while the sum is 40.

The square root of 53399173 is about 7307.4737768944. The cubic root of 53399173 is about 376.5692416038.

The spelling of 53399173 in words is "fifty-three million, three hundred ninety-nine thousand, one hundred seventy-three".