53131165 has 8 divisors (see below), whose sum is σ = 64186200. Its totient is φ = 42219072.

The previous prime is 53131139. The next prime is 53131193. The reversal of 53131165 is 56113135.

It can be written as a sum of positive squares in 4 ways, for example, as 45369 + 53085796 = 213^2 + 7286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53131165 - 2⁷ = 53131037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34914 + ... + 36403.

It is an arithmetic number, because the mean of its divisors is an integer number (8023275).

Almost surely, 2^53131165 is an apocalyptic number.

It is an amenable number.

53131165 is a deficient number, since it is larger than the sum of its proper divisors (11055035).

53131165 is a wasteful number, since it uses less digits than its factorization.

53131165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71471.

The product of its digits is 1350, while the sum is 25.

The square root of 53131165 is about 7289.1127717988. The cubic root of 53131165 is about 375.9381901000.

The spelling of 53131165 in words is "fifty-three million, one hundred thirty-one thousand, one hundred sixty-five".