551145460 has 12 divisors (see below), whose sum is σ = 1157405508. Its totient is φ = 220458176.

The previous prime is 551145443. The next prime is 551145473. The reversal of 551145460 is 64541155.

It can be written as a sum of positive squares in 2 ways, for example, as 328479376 + 222666084 = 18124^2 + 14922^2 .

It is a super-2 number, since 2×551145460² = 607522636157223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13778617 + ... + 13778656.

It is an arithmetic number, because the mean of its divisors is an integer number (96450459).

Almost surely, 2^551145460 is an apocalyptic number.

It is an amenable number.

551145460 is an abundant number, since it is smaller than the sum of its proper divisors (606260048).

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

551145460 is a wasteful number, since it uses less digits than its factorization.

551145460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27557282 (or 27557280 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 551145460 is about 23476.4873863191. The cubic root of 551145460 is about 819.8896639169.

The spelling of 551145460 in words is "five hundred fifty-one million, one hundred forty-five thousand, four hundred sixty".