551223522 has 16 divisors (see below), whose sum is σ = 1224941280. Its totient is φ = 183741156.

The previous prime is 551223469. The next prime is 551223523. The reversal of 551223522 is 225322155.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (551223523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5103868 + ... + 5103975.

It is an arithmetic number, because the mean of its divisors is an integer number (76558830).

Almost surely, 2^551223522 is an apocalyptic number.

551223522 is an abundant number, since it is smaller than the sum of its proper divisors (673717758).

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

551223522 is a wasteful number, since it uses less digits than its factorization.

551223522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207854 (or 10207848 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 551223522 is about 23478.1498845203. The cubic root of 551223522 is about 819.9283707013.

Adding to 551223522 its reverse (225322155), we get a palindrome (776545677).

The spelling of 551223522 in words is "five hundred fifty-one million, two hundred twenty-three thousand, five hundred twenty-two".