864952551 has 6 divisors (see below), whose sum is σ = 1249375920. Its totient is φ = 576635028.

The previous prime is 864952531. The next prime is 864952591. The reversal of 864952551 is 155259468.

864952551 is a `hidden beast` number, since 8 + 6 + 4 + 95 + 2 + 551 = 666.

864952551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864952551 - 2⁵ = 864952519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864952497 and 864952506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864952531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48052911 + ... + 48052928.

It is an arithmetic number, because the mean of its divisors is an integer number (208229320).

Almost surely, 2^864952551 is an apocalyptic number.

864952551 is a deficient number, since it is larger than the sum of its proper divisors (384423369).

864952551 is a wasteful number, since it uses less digits than its factorization.

864952551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96105845 (or 96105842 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 864952551 is about 29410.0756714429. The cubic root of 864952551 is about 952.7905212539.

The spelling of 864952551 in words is "eight hundred sixty-four million, nine hundred fifty-two thousand, five hundred fifty-one".