516612361 has 4 divisors (see below), whose sum is σ = 539073792. Its totient is φ = 494150932.

The previous prime is 516612311. The next prime is 516612373. The reversal of 516612361 is 163216615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516612361 - 2¹⁵ = 516579593 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516612301) 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, 11230681 + ... + 11230726.

It is an arithmetic number, because the mean of its divisors is an integer number (134768448).

Almost surely, 2^516612361 is an apocalyptic number.

It is an amenable number.

516612361 is a deficient number, since it is larger than the sum of its proper divisors (22461431).

516612361 is a wasteful number, since it uses less digits than its factorization.

516612361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22461430.

The product of its digits is 6480, while the sum is 31.

The square root of 516612361 is about 22729.1082315167. The cubic root of 516612361 is about 802.3950936065.

Adding to 516612361 its reverse (163216615), we get a palindrome (679828976).

The spelling of 516612361 in words is "five hundred sixteen million, six hundred twelve thousand, three hundred sixty-one".