515000000 has 112 divisors (see below), whose sum is σ = 1289840448. Its totient is φ = 204000000.

The previous prime is 514999847. The next prime is 515000011. The reversal of 515000000 is 515.

It is a hoax number, since the sum of its digits (11) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4999949 + ... + 5000051.

Almost surely, 2^515000000 is an apocalyptic number.

515000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644920224).

515000000 is an abundant number, since it is smaller than the sum of its proper divisors (774840448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515000000 is an frugal number, since it uses more digits than its factorization.

515000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 515000000 is about 22693.6114358204. The cubic root of 515000000 is about 801.5594581377.

Adding to 515000000 its reverse (515), we get a palindrome (515000515).

Multiplying 515000000 by its reverse (515), we get a square (265225000000 = 515000²).

515000000 divided by its reverse (515) gives a 6-th power (1000000 = 10⁶).

The spelling of 515000000 in words is "five hundred fifteen million", and thus it is an aban number.