79751515 has 8 divisors (see below), whose sum is σ = 95881968. Its totient is φ = 63681120.

The previous prime is 79751509. The next prime is 79751549. The reversal of 79751515 is 51515797.

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

It is not a de Polignac number, because 79751515 - 2¹⁵ = 79718747 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 12037 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (11985246).

Almost surely, 2^79751515 is an apocalyptic number.

79751515 is a deficient number, since it is larger than the sum of its proper divisors (16130453).

79751515 is a wasteful number, since it uses less digits than its factorization.

79751515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30029.

The product of its digits is 55125, while the sum is 40.

The square root of 79751515 is about 8930.3703730584. The cubic root of 79751515 is about 430.4403547282.

The spelling of 79751515 in words is "seventy-nine million, seven hundred fifty-one thousand, five hundred fifteen".