791372555 has 4 divisors (see below), whose sum is σ = 949647072. Its totient is φ = 633098040.

The previous prime is 791372551. The next prime is 791372599. The reversal of 791372555 is 555273197.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 791372555 - 2² = 791372551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791372551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79137251 + ... + 79137260.

It is an arithmetic number, because the mean of its divisors is an integer number (237411768).

Almost surely, 2^791372555 is an apocalyptic number.

791372555 is a deficient number, since it is larger than the sum of its proper divisors (158274517).

791372555 is a wasteful number, since it uses less digits than its factorization.

791372555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158274516.

The product of its digits is 330750, while the sum is 44.

The square root of 791372555 is about 28131.3447065724. The cubic root of 791372555 is about 924.9686105735.

The spelling of 791372555 in words is "seven hundred ninety-one million, three hundred seventy-two thousand, five hundred fifty-five".