53116631 has 4 divisors (see below), whose sum is σ = 53139600. Its totient is φ = 53093664.

The previous prime is 53116621. The next prime is 53116633. The reversal of 53116631 is 13661135.

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 53116631 - 2¹⁰ = 53115607 is a prime.

It is a super-2 number, since 2×53116631² = 5642752977580322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53116631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53116633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7571 + ... + 12788.

It is an arithmetic number, because the mean of its divisors is an integer number (13284900).

Almost surely, 2^53116631 is an apocalyptic number.

53116631 is a deficient number, since it is larger than the sum of its proper divisors (22969).

53116631 is a wasteful number, since it uses less digits than its factorization.

53116631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22968.

The product of its digits is 1620, while the sum is 26.

The square root of 53116631 is about 7288.1157372808. The cubic root of 53116631 is about 375.9039077478.

Adding to 53116631 its reverse (13661135), we get a palindrome (66777766).

The spelling of 53116631 in words is "fifty-three million, one hundred sixteen thousand, six hundred thirty-one".