551154856 has 16 divisors (see below), whose sum is σ = 1181046240. Its totient is φ = 236209200.

The previous prime is 551154833. The next prime is 551154881. The reversal of 551154856 is 658451155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4920970 + ... + 4921081.

It is an arithmetic number, because the mean of its divisors is an integer number (73815390).

Almost surely, 2^551154856 is an apocalyptic number.

551154856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

551154856 is an abundant number, since it is smaller than the sum of its proper divisors (629891384).

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

551154856 is a wasteful number, since it uses less digits than its factorization.

551154856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842064 (or 9842060 counting only the distinct ones).

The product of its digits is 120000, while the sum is 40.

The square root of 551154856 is about 23476.6875005824. The cubic root of 551154856 is about 819.8943230859.

The spelling of 551154856 in words is "five hundred fifty-one million, one hundred fifty-four thousand, eight hundred fifty-six".