79167521 has 8 divisors (see below), whose sum is σ = 86529024. Its totient is φ = 72106560.

The previous prime is 79167511. The next prime is 79167523. The reversal of 79167521 is 12576197.

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 79167521 - 2¹⁰ = 79166497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79167523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74585 + ... + 75638.

It is an arithmetic number, because the mean of its divisors is an integer number (10816128).

Almost surely, 2^79167521 is an apocalyptic number.

It is an amenable number.

79167521 is a deficient number, since it is larger than the sum of its proper divisors (7361503).

79167521 is a wasteful number, since it uses less digits than its factorization.

79167521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150271.

The product of its digits is 26460, while the sum is 38.

The square root of 79167521 is about 8897.6132192853. The cubic root of 79167521 is about 429.3871221948.

The spelling of 79167521 in words is "seventy-nine million, one hundred sixty-seven thousand, five hundred twenty-one".