551421522 has 24 divisors (see below), whose sum is σ = 1196230464. Its totient is φ = 183578904.

The previous prime is 551421511. The next prime is 551421529. The reversal of 551421522 is 225124155.

It is not an unprimeable number, because it can be changed into a prime (551421529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3798 + ... + 33425.

It is an arithmetic number, because the mean of its divisors is an integer number (49842936).

Almost surely, 2^551421522 is an apocalyptic number.

551421522 is an abundant number, since it is smaller than the sum of its proper divisors (644808942).

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

551421522 is a wasteful number, since it uses less digits than its factorization.

551421522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38054 (or 38051 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 551421522 is about 23482.3661925284. The cubic root of 551421522 is about 820.0265319593.

Adding to 551421522 its reverse (225124155), we get a palindrome (776545677).

The spelling of 551421522 in words is "five hundred fifty-one million, four hundred twenty-one thousand, five hundred twenty-two".