22152552 has 16 divisors (see below), whose sum is σ = 55381440. Its totient is φ = 7384176.

The previous prime is 22152551. The next prime is 22152563. The reversal of 22152552 is 25525122.

It is a super-2 number, since 2×22152552² = 981471120225408, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 923023 = 22152552 / (2 + 2 + 1 + 5 + 2 + 5 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (22152551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461488 + ... + 461535.

It is an arithmetic number, because the mean of its divisors is an integer number (3461340).

Almost surely, 2^22152552 is an apocalyptic number.

It is an amenable number.

22152552 is an abundant number, since it is smaller than the sum of its proper divisors (33228888).

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

22152552 is a wasteful number, since it uses less digits than its factorization.

22152552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923032 (or 923028 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 22152552 is about 4706.6497638979. The cubic root of 22152552 is about 280.8501034774.

Adding to 22152552 its reverse (25525122), we get a palindrome (47677674).

The spelling of 22152552 in words is "twenty-two million, one hundred fifty-two thousand, five hundred fifty-two".