551560 has 16 divisors (see below), whose sum is σ = 1241100. Its totient is φ = 220608.

The previous prime is 551557. The next prime is 551569. The reversal of 551560 is 65155.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 30276 = 722^2 + 174^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (551569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6855 + ... + 6934.

2⁵⁵¹⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

551560 is an abundant number, since it is smaller than the sum of its proper divisors (689540).

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

551560 is a wasteful number, since it uses less digits than its factorization.

551560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13800 (or 13796 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 551560 is about 742.6708557632. The cubic root of 551560 is about 82.0095170394.

It can be divided in two parts, 551 and 560, that added together give a palindrome (1111).

The spelling of 551560 in words is "five hundred fifty-one thousand, five hundred sixty".