79782255 has 48 divisors (see below), whose sum is σ = 159644160. Its totient is φ = 36103104.

The previous prime is 79782253. The next prime is 79782257. The reversal of 79782255 is 55228797.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79782253) and next prime (79782257).

It is not a de Polignac number, because 79782255 - 2¹ = 79782253 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 79782255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79782253) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 31216 + ... + 33674.

It is an arithmetic number, because the mean of its divisors is an integer number (3325920).

Almost surely, 2^79782255 is an apocalyptic number.

79782255 is an abundant number, since it is smaller than the sum of its proper divisors (79861905).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79782255 is a wasteful number, since it uses less digits than its factorization.

79782255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580 (or 2577 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 79782255 is about 8932.0913004738. The cubic root of 79782255 is about 430.4956516373.

The spelling of 79782255 in words is "seventy-nine million, seven hundred eighty-two thousand, two hundred fifty-five".