22554520 has 64 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 8385408.

The previous prime is 22554509. The next prime is 22554523. The reversal of 22554520 is 2545522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22554523) 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 15 ways as a sum of consecutive naturals, for example, 44589 + ... + 45091.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^22554520 is an apocalyptic number.

22554520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22554520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27216000).

22554520 is an abundant number, since it is smaller than the sum of its proper divisors (31877480).

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

22554520 is a wasteful number, since it uses less digits than its factorization.

22554520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 22554520 is about 4749.1599257132. The cubic root of 22554520 is about 282.5386482222.

It can be divided in two parts, 225 and 54520, that added together give a palindrome (54745).

The spelling of 22554520 in words is "twenty-two million, five hundred fifty-four thousand, five hundred twenty".