551732532 has 48 divisors (see below), whose sum is σ = 1393738752. Its totient is φ = 168865920.

The previous prime is 551732521. The next prime is 551732539. The reversal of 551732532 is 235237155.

It is a junction number, because it is equal to n+sod(n) for n = 551732493 and 551732502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551732539) 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, 20538 + ... + 39054.

It is an arithmetic number, because the mean of its divisors is an integer number (29036224).

Almost surely, 2^551732532 is an apocalyptic number.

551732532 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551732532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696869376).

551732532 is an abundant number, since it is smaller than the sum of its proper divisors (842006220).

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

551732532 is a wasteful number, since it uses less digits than its factorization.

551732532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18728 (or 18726 counting only the distinct ones).

The product of its digits is 31500, while the sum is 33.

The square root of 551732532 is about 23488.9874622130. The cubic root of 551732532 is about 820.1806720671.

Adding to 551732532 its reverse (235237155), we get a palindrome (786969687).

The spelling of 551732532 in words is "five hundred fifty-one million, seven hundred thirty-two thousand, five hundred thirty-two".