53173243 has 4 divisors (see below), whose sum is σ = 53224888. Its totient is φ = 53121600.

The previous prime is 53173213. The next prime is 53173247. The reversal of 53173243 is 34237135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53173243 - 2⁹ = 53172731 is a prime.

It is a super-2 number, since 2×53173243² = 5654787542274098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53173247) 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, 24246 + ... + 26347.

It is an arithmetic number, because the mean of its divisors is an integer number (13306222).

Almost surely, 2^53173243 is an apocalyptic number.

53173243 is a deficient number, since it is larger than the sum of its proper divisors (51645).

53173243 is a wasteful number, since it uses less digits than its factorization.

53173243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51644.

The product of its digits is 7560, while the sum is 28.

The square root of 53173243 is about 7291.9985600657. The cubic root of 53173243 is about 376.0374071543.

The spelling of 53173243 in words is "fifty-three million, one hundred seventy-three thousand, two hundred forty-three".