53173813 has 24 divisors (see below), whose sum is σ = 67866176. Its totient is φ = 40772160.

The previous prime is 53173801. The next prime is 53173819. The reversal of 53173813 is 31837135.

It is a happy number.

It is not a de Polignac number, because 53173813 - 2²¹ = 51076661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53173819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56281 + ... + 57217.

Almost surely, 2^53173813 is an apocalyptic number.

It is an amenable number.

53173813 is a deficient number, since it is larger than the sum of its proper divisors (14692363).

53173813 is a wasteful number, since it uses less digits than its factorization.

53173813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1022 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 53173813 is about 7292.0376438963. The cubic root of 53173813 is about 376.0387508160.

The spelling of 53173813 in words is "fifty-three million, one hundred seventy-three thousand, eight hundred thirteen".