551212032 has 88 divisors (see below), whose sum is σ = 1679129536. Its totient is φ = 157483008.

The previous prime is 551212027. The next prime is 551212033. The reversal of 551212032 is 230212155.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551212033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8688 + ... + 34320.

Almost surely, 2^551212032 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 551212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839564768).

551212032 is an abundant number, since it is smaller than the sum of its proper divisors (1127917504).

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

551212032 is a wasteful number, since it uses less digits than its factorization.

551212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25663 (or 25645 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 551212032 is about 23477.9051876440. The cubic root of 551212032 is about 819.9226736522.

Adding to 551212032 its reverse (230212155), we get a palindrome (781424187).

The spelling of 551212032 in words is "five hundred fifty-one million, two hundred twelve thousand, thirty-two".