79151515 has 8 divisors (see below), whose sum is σ = 95961600. Its totient is φ = 62668032.

The previous prime is 79151489. The next prime is 79151521. The reversal of 79151515 is 51515197.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79151515 - 2¹⁵ = 79118747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81115 + ... + 82084.

It is an arithmetic number, because the mean of its divisors is an integer number (11995200).

Almost surely, 2^79151515 is an apocalyptic number.

79151515 is a deficient number, since it is larger than the sum of its proper divisors (16810085).

79151515 is a wasteful number, since it uses less digits than its factorization.

79151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163301.

The product of its digits is 7875, while the sum is 34.

The square root of 79151515 is about 8896.7137191212. The cubic root of 79151515 is about 429.3581825765.

The spelling of 79151515 in words is "seventy-nine million, one hundred fifty-one thousand, five hundred fifteen".