516261515 has 32 divisors (see below), whose sum is σ = 773715456. Its totient is φ = 321269760.

The previous prime is 516261479. The next prime is 516261517. The reversal of 516261515 is 515162615.

It is not a de Polignac number, because 516261515 - 2¹⁴ = 516245131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516261517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443324 + ... + 444486.

It is an arithmetic number, because the mean of its divisors is an integer number (24178608).

Almost surely, 2^516261515 is an apocalyptic number.

516261515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

516261515 is a deficient number, since it is larger than the sum of its proper divisors (257453941).

516261515 is a wasteful number, since it uses less digits than its factorization.

516261515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its digits is 9000, while the sum is 32.

The square root of 516261515 is about 22721.3889320173. The cubic root of 516261515 is about 802.2134094380.

The spelling of 516261515 in words is "five hundred sixteen million, two hundred sixty-one thousand, five hundred fifteen".