515013887 has 2 divisors, whose sum is σ = 515013888. Its totient is φ = 515013886.

The previous prime is 515013857. The next prime is 515013899. The reversal of 515013887 is 788310515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515013887 - 2¹² = 515009791 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 515013887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515013857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257506943 + 257506944.

It is an arithmetic number, because the mean of its divisors is an integer number (257506944).

Almost surely, 2^515013887 is an apocalyptic number.

515013887 is a deficient number, since it is larger than the sum of its proper divisors (1).

515013887 is an equidigital number, since it uses as much as digits as its factorization.

515013887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 515013887 is about 22693.9174009249. The cubic root of 515013887 is about 801.5666627695.

The spelling of 515013887 in words is "five hundred fifteen million, thirteen thousand, eight hundred eighty-seven".