516631 has 4 divisors (see below), whose sum is σ = 530632. Its totient is φ = 502632.

The previous prime is 516623. The next prime is 516643. The reversal of 516631 is 136615.

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 516631 - 2³ = 516623 is a prime.

It is a super-2 number, since 2×516631² = 533815180322, 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 (516611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6945 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (132658).

2⁵¹⁶⁶³¹ is an apocalyptic number.

516631 is a deficient number, since it is larger than the sum of its proper divisors (14001).

516631 is a wasteful number, since it uses less digits than its factorization.

516631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000.

The product of its digits is 540, while the sum is 22.

The square root of 516631 is about 718.7704779691. The cubic root of 516631 is about 80.2404743435.

The spelling of 516631 in words is "five hundred sixteen thousand, six hundred thirty-one".