172224522 has 16 divisors (see below), whose sum is σ = 382721280. Its totient is φ = 57408156.

The previous prime is 172224491. The next prime is 172224539. The reversal of 172224522 is 225422271.

It is a super-2 number, since 2×172224522² = 59322571956256968, which contains 22 as substring.

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

It is an unprimeable number.

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, 1594618 + ... + 1594725.

It is an arithmetic number, because the mean of its divisors is an integer number (23920080).

Almost surely, 2^172224522 is an apocalyptic number.

172224522 is an abundant number, since it is smaller than the sum of its proper divisors (210496758).

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

172224522 is a wasteful number, since it uses less digits than its factorization.

172224522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3189354 (or 3189348 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 172224522 is about 13123.4340780148. The cubic root of 172224522 is about 556.3716547113.

Adding to 172224522 its reverse (225422271), we get a palindrome (397646793).

It can be divided in two parts, 1722 and 24522, that added together give a square (26244 = 162²).

The spelling of 172224522 in words is "one hundred seventy-two million, two hundred twenty-four thousand, five hundred twenty-two".