79216551 has 24 divisors (see below), whose sum is σ = 118145664. Its totient is φ = 51114240.

The previous prime is 79216537. The next prime is 79216561. The reversal of 79216551 is 15561297.

79216551 is a `hidden beast` number, since 7 + 92 + 16 + 551 = 666.

It is not a de Polignac number, because 79216551 - 2¹⁰ = 79215527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79216561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49770 + ... + 51336.

It is an arithmetic number, because the mean of its divisors is an integer number (4922736).

Almost surely, 2^79216551 is an apocalyptic number.

79216551 is a deficient number, since it is larger than the sum of its proper divisors (38929113).

79216551 is a wasteful number, since it uses less digits than its factorization.

79216551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1748 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 79216551 is about 8900.3680260987. The cubic root of 79216551 is about 429.4757465266.

The spelling of 79216551 in words is "seventy-nine million, two hundred sixteen thousand, five hundred fifty-one".