79872255 has 12 divisors (see below), whose sum is σ = 138445320. Its totient is φ = 42598512.

The previous prime is 79872229. The next prime is 79872269. The reversal of 79872255 is 55227897.

It is a happy number.

It is not a de Polignac number, because 79872255 - 2¹³ = 79864063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1774939 = 79872255 / (7 + 9 + 8 + 7 + 2 + 2 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 79872255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 887425 + ... + 887514.

It is an arithmetic number, because the mean of its divisors is an integer number (11537110).

Almost surely, 2^79872255 is an apocalyptic number.

79872255 is a deficient number, since it is larger than the sum of its proper divisors (58573065).

79872255 is a wasteful number, since it uses less digits than its factorization.

79872255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774950 (or 1774947 counting only the distinct ones).

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

The square root of 79872255 is about 8937.1278943517. The cubic root of 79872255 is about 430.6574672729.

The spelling of 79872255 in words is "seventy-nine million, eight hundred seventy-two thousand, two hundred fifty-five".