515252651 has 4 divisors (see below), whose sum is σ = 520564632. Its totient is φ = 509940672.

The previous prime is 515252627. The next prime is 515252663. The reversal of 515252651 is 156252515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515252651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515252351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2655845 + ... + 2656038.

It is an arithmetic number, because the mean of its divisors is an integer number (130141158).

Almost surely, 2^515252651 is an apocalyptic number.

515252651 is a deficient number, since it is larger than the sum of its proper divisors (5311981).

515252651 is an equidigital number, since it uses as much as digits as its factorization.

515252651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311980.

The product of its digits is 15000, while the sum is 32.

The square root of 515252651 is about 22699.1773198942. The cubic root of 515252651 is about 801.6905142482.

The spelling of 515252651 in words is "five hundred fifteen million, two hundred fifty-two thousand, six hundred fifty-one".