22545552 has 80 divisors (see below), whose sum is σ = 62496000. Its totient is φ = 6982272.

The previous prime is 22545529. The next prime is 22545577. The reversal of 22545552 is 25554522.

22545552 = T₂₂₃ + T₂₂₄ + ... + T₅₂₆.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53599 + ... + 54017.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^22545552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22545552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31248000).

22545552 is an abundant number, since it is smaller than the sum of its proper divisors (39950448).

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

22545552 is a wasteful number, since it uses less digits than its factorization.

22545552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its digits is 20000, while the sum is 30.

The square root of 22545552 is about 4748.2156648577. The cubic root of 22545552 is about 282.5011961210.

The spelling of 22545552 in words is "twenty-two million, five hundred forty-five thousand, five hundred fifty-two".