22545504 has 36 divisors (see below), whose sum is σ = 64114596. Its totient is φ = 7515072.

The previous prime is 22545503. The next prime is 22545521. The reversal of 22545504 is 40554522.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×22545504² = 1016599501228032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38854 + ... + 39429.

It is an arithmetic number, because the mean of its divisors is an integer number (1780961).

Almost surely, 2^22545504 is an apocalyptic number.

22545504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22545504 is an abundant number, since it is smaller than the sum of its proper divisors (41569092).

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

22545504 is a wasteful number, since it uses less digits than its factorization.

22545504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78299 (or 78288 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 22545504 is about 4748.2106103247. The cubic root of 22545504 is about 282.5009956370.

The spelling of 22545504 in words is "twenty-two million, five hundred forty-five thousand, five hundred four".