551532 has 48 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 167040.

The previous prime is 551519. The next prime is 551539. The reversal of 551532 is 235155.

It is a junction number, because it is equal to n+sod(n) for n = 551499 and 551508.

It is not an unprimeable number, because it can be changed into a prime (551539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9319 + ... + 9377.

It is an arithmetic number, because the mean of its divisors is an integer number (29400).

2⁵⁵¹⁵³² 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 551532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705600).

551532 is an abundant number, since it is smaller than the sum of its proper divisors (859668).

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

551532 is a wasteful number, since it uses less digits than its factorization.

551532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 124 counting only the distinct ones).

The product of its digits is 750, while the sum is 21.

The square root of 551532 is about 742.6520046428. The cubic root of 551532 is about 82.0081292754.

Adding to 551532 its reverse (235155), we get a palindrome (786687).

It can be divided in two parts, 55153 and 2, that added together give a palindrome (55155).

The spelling of 551532 in words is "five hundred fifty-one thousand, five hundred thirty-two".