22505544 has 48 divisors (see below), whose sum is σ = 61252620. Its totient is φ = 7464960.

The previous prime is 22505521. The next prime is 22505551. The reversal of 22505544 is 44550522.

It can be written as a sum of positive squares in 2 ways, for example, as 17388900 + 5116644 = 4170^2 + 2262^2 .

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 11 ways as a sum of consecutive naturals, for example, 16704 + ... + 18000.

Almost surely, 2^22505544 is an apocalyptic number.

22505544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22505544 is an abundant number, since it is smaller than the sum of its proper divisors (38747076).

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

22505544 is a wasteful number, since it uses less digits than its factorization.

22505544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1543 counting only the distinct ones).

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

The square root of 22505544 is about 4744.0008431702. Note that the first 3 decimals coincide. The cubic root of 22505544 is about 282.3339938879. Note that the first 3 decimals are identical.

The spelling of 22505544 in words is "twenty-two million, five hundred five thousand, five hundred forty-four".