53197831 has 4 divisors (see below), whose sum is σ = 53230464. Its totient is φ = 53165200.

The previous prime is 53197819. The next prime is 53197841. The reversal of 53197831 is 13879135.

It is a happy number.

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 53197831 - 2²⁵ = 19643399 is a prime.

It is a super-2 number, since 2×53197831² = 5660018446209122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53197841) 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, 13735 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (13307616).

Almost surely, 2^53197831 is an apocalyptic number.

53197831 is a deficient number, since it is larger than the sum of its proper divisors (32633).

53197831 is a wasteful number, since it uses less digits than its factorization.

53197831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32632.

The product of its digits is 22680, while the sum is 37.

The square root of 53197831 is about 7293.6843227549. The cubic root of 53197831 is about 376.0953597539.

The spelling of 53197831 in words is "fifty-three million, one hundred ninety-seven thousand, eight hundred thirty-one".