516226639 has 2 divisors, whose sum is σ = 516226640. Its totient is φ = 516226638.

The previous prime is 516226631. The next prime is 516226649. The reversal of 516226639 is 936622615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516226639 - 2³ = 516226631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516226631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258113319 + 258113320.

It is an arithmetic number, because the mean of its divisors is an integer number (258113320).

Almost surely, 2^516226639 is an apocalyptic number.

516226639 is a deficient number, since it is larger than the sum of its proper divisors (1).

516226639 is an equidigital number, since it uses as much as digits as its factorization.

516226639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 516226639 is about 22720.6214483671. The cubic root of 516226639 is about 802.1953445464.

The spelling of 516226639 in words is "five hundred sixteen million, two hundred twenty-six thousand, six hundred thirty-nine".