551551532 has 24 divisors (see below), whose sum is σ = 1161162240. Its totient is φ = 223938000.

The previous prime is 551551487. The next prime is 551551537. The reversal of 551551532 is 235155155.

It is not an unprimeable number, because it can be changed into a prime (551551537) 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, 517844 + ... + 518907.

It is an arithmetic number, because the mean of its divisors is an integer number (48381760).

Almost surely, 2^551551532 is an apocalyptic number.

It is an amenable number.

551551532 is an abundant number, since it is smaller than the sum of its proper divisors (609610708).

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

551551532 is a wasteful number, since it uses less digits than its factorization.

551551532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036781 (or 1036779 counting only the distinct ones).

The product of its digits is 18750, while the sum is 32.

The square root of 551551532 is about 23485.1342768143. The cubic root of 551551532 is about 820.0909734483.

It can be divided in two parts, 55155153 and 2, that added together give a palindrome (55155155).

The spelling of 551551532 in words is "five hundred fifty-one million, five hundred fifty-one thousand, five hundred thirty-two".