516955631 has 4 divisors (see below), whose sum is σ = 517001664. Its totient is φ = 516909600.

The previous prime is 516955619. The next prime is 516955639. The reversal of 516955631 is 136559615.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 516955631 - 2²⁶ = 449846767 is a prime.

It is a super-2 number, since 2×516955631² = 534486248845216322, 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 (516955639) 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, 6146 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (129250416).

Almost surely, 2^516955631 is an apocalyptic number.

516955631 is a deficient number, since it is larger than the sum of its proper divisors (46033).

516955631 is a wasteful number, since it uses less digits than its factorization.

516955631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46032.

The product of its digits is 121500, while the sum is 41.

The square root of 516955631 is about 22736.6583076757. The cubic root of 516955631 is about 802.5727749790.

The spelling of 516955631 in words is "five hundred sixteen million, nine hundred fifty-five thousand, six hundred thirty-one".