551832 has 16 divisors (see below), whose sum is σ = 1379640. Its totient is φ = 183936.

The previous prime is 551813. The next prime is 551843. The reversal of 551832 is 238155.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 22993 = 551832 / (5 + 5 + 1 + 8 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

551832 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11473 + ... + 11520.

2⁵⁵¹⁸³² is an apocalyptic number.

It is an amenable number.

551832 is an abundant number, since it is smaller than the sum of its proper divisors (827808).

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

551832 is a wasteful number, since it uses less digits than its factorization.

551832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23002 (or 22998 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 551832 is about 742.8539560371. The cubic root of 551832 is about 82.0229957318.

Adding to 551832 its reverse (238155), we get a palindrome (789987).

The spelling of 551832 in words is "five hundred fifty-one thousand, eight hundred thirty-two".