515959963 has 2 divisors, whose sum is σ = 515959964. Its totient is φ = 515959962.

The previous prime is 515959957. The next prime is 515959973. The reversal of 515959963 is 369959515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515959963 - 2²⁵ = 482405531 is a prime.

It is a super-2 number, since 2×515959963² = 532429366837922738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 515959963.

It is not a weakly prime, because it can be changed into another prime (515959973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257979981 + 257979982.

It is an arithmetic number, because the mean of its divisors is an integer number (257979982).

Almost surely, 2^515959963 is an apocalyptic number.

515959963 is a deficient number, since it is larger than the sum of its proper divisors (1).

515959963 is an equidigital number, since it uses as much as digits as its factorization.

515959963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1640250, while the sum is 52.

The square root of 515959963 is about 22714.7521007824. The cubic root of 515959963 is about 802.0571861761.

The spelling of 515959963 in words is "five hundred fifteen million, nine hundred fifty-nine thousand, nine hundred sixty-three".