515856313 has 16 divisors (see below), whose sum is σ = 628228224. Its totient is φ = 413487360.

The previous prime is 515856307. The next prime is 515856323. The reversal of 515856313 is 313658515.

It is a cyclic number.

It is not a de Polignac number, because 515856313 - 2⁵ = 515856281 is a prime.

It is a super-2 number, since 2×515856313² = 532215471323907938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515856323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4878 + ... + 32488.

It is an arithmetic number, because the mean of its divisors is an integer number (39264264).

Almost surely, 2^515856313 is an apocalyptic number.

It is an amenable number.

515856313 is a deficient number, since it is larger than the sum of its proper divisors (112371911).

515856313 is a wasteful number, since it uses less digits than its factorization.

515856313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27792.

The product of its digits is 54000, while the sum is 37.

The square root of 515856313 is about 22712.4704292598. The cubic root of 515856313 is about 802.0034747768.

The spelling of 515856313 in words is "five hundred fifteen million, eight hundred fifty-six thousand, three hundred thirteen".