551801128 has 32 divisors (see below), whose sum is σ = 1065801960. Its totient is φ = 267632640.

The previous prime is 551801093. The next prime is 551801141. The reversal of 551801128 is 821108155.

It can be written as a sum of positive squares in 4 ways, for example, as 460445764 + 91355364 = 21458^2 + 9558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551801128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101848 + ... + 107128.

Almost surely, 2^551801128 is an apocalyptic number.

It is an amenable number.

551801128 is a deficient number, since it is larger than the sum of its proper divisors (514000832).

551801128 is a wasteful number, since it uses less digits than its factorization.

551801128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677 (or 5673 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 31.

The square root of 551801128 is about 23490.4475904568. The cubic root of 551801128 is about 820.2146612308.

The spelling of 551801128 in words is "five hundred fifty-one million, eight hundred one thousand, one hundred twenty-eight".