79752555 has 24 divisors (see below), whose sum is σ = 139024080. Its totient is φ = 42292800.

The previous prime is 79752551. The next prime is 79752587. The reversal of 79752555 is 55525797.

79752555 is a `hidden beast` number, since 7 + 97 + 5 + 2 + 555 = 666.

It is not a de Polignac number, because 79752555 - 2² = 79752551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 79752555.

It is not an unprimeable number, because it can be changed into a prime (79752551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3105 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (5792670).

Almost surely, 2^79752555 is an apocalyptic number.

79752555 is a deficient number, since it is larger than the sum of its proper divisors (59271525).

79752555 is a wasteful number, since it uses less digits than its factorization.

79752555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091 (or 10088 counting only the distinct ones).

The product of its digits is 551250, while the sum is 45.

The square root of 79752555 is about 8930.4286011367. The cubic root of 79752555 is about 430.4422257733.

The spelling of 79752555 in words is "seventy-nine million, seven hundred fifty-two thousand, five hundred fifty-five".