7972515 has 12 divisors (see below), whose sum is σ = 13819104. Its totient is φ = 4251984.

The previous prime is 7972511. The next prime is 7972553. The reversal of 7972515 is 5152797.

7972515 is a `hidden beast` number, since 79 + 72 + 515 = 666.

It is not a de Polignac number, because 7972515 - 2² = 7972511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7972515.

It is not an unprimeable number, because it can be changed into a prime (7972511) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 88539 + ... + 88628.

It is an arithmetic number, because the mean of its divisors is an integer number (1151592).

Almost surely, 2^7972515 is an apocalyptic number.

7972515 is a deficient number, since it is larger than the sum of its proper divisors (5846589).

7972515 is a wasteful number, since it uses less digits than its factorization.

7972515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177178 (or 177175 counting only the distinct ones).

The product of its digits is 22050, while the sum is 36.

The square root of 7972515 is about 2823.5642369176. The cubic root of 7972515 is about 199.7706955311.

The spelling of 7972515 in words is "seven million, nine hundred seventy-two thousand, five hundred fifteen".