8791551 has 16 divisors (see below), whose sum is σ = 13075200. Its totient is φ = 5838264.

The previous prime is 8791537. The next prime is 8791561. The reversal of 8791551 is 1551978.

It is not a de Polignac number, because 8791551 - 2⁶ = 8791487 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8791561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9240 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (817200).

Almost surely, 2^8791551 is an apocalyptic number.

8791551 is a deficient number, since it is larger than the sum of its proper divisors (4283649).

8791551 is a wasteful number, since it uses less digits than its factorization.

8791551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275 (or 1269 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The square root of 8791551 is about 2965.0549741953. The cubic root of 8791551 is about 206.3899281862.

The spelling of 8791551 in words is "eight million, seven hundred ninety-one thousand, five hundred fifty-one".