53131115 has 4 divisors (see below), whose sum is σ = 63757344. Its totient is φ = 42504888.

The previous prime is 53131109. The next prime is 53131123. The reversal of 53131115 is 51113135.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53131115 is a prime.

It is a super-2 number, since 2×53131115² = 5645830762286450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5313107 + ... + 5313116.

It is an arithmetic number, because the mean of its divisors is an integer number (15939336).

Almost surely, 2^53131115 is an apocalyptic number.

53131115 is a deficient number, since it is larger than the sum of its proper divisors (10626229).

53131115 is a wasteful number, since it uses less digits than its factorization.

53131115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10626228.

The product of its digits is 225, while the sum is 20.

The square root of 53131115 is about 7289.1093420253. The cubic root of 53131115 is about 375.9380721723.

The spelling of 53131115 in words is "fifty-three million, one hundred thirty-one thousand, one hundred fifteen".