551295864 has 144 divisors (see below), whose sum is σ = 1745944200. Its totient is φ = 156691584.

The previous prime is 551295851. The next prime is 551295883. The reversal of 551295864 is 468592155.

551295864 is a `hidden beast` number, since 55 + 12 + 9 + 586 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1082842 + ... + 1083350.

Almost surely, 2^551295864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551295864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872972100).

551295864 is an abundant number, since it is smaller than the sum of its proper divisors (1194648336).

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

551295864 is a wasteful number, since it uses less digits than its factorization.

551295864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 828 counting only the distinct ones).

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

The square root of 551295864 is about 23479.6904579255. The cubic root of 551295864 is about 819.9642379803.

The spelling of 551295864 in words is "five hundred fifty-one million, two hundred ninety-five thousand, eight hundred sixty-four".