22554745 has 4 divisors (see below), whose sum is σ = 27065700. Its totient is φ = 18043792.

The previous prime is 22554739. The next prime is 22554757. The reversal of 22554745 is 54745522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7469289 + 15085456 = 2733^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 22554745 - 2⁵ = 22554713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22554745.

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 3 ways as a sum of consecutive naturals, for example, 2255470 + ... + 2255479.

It is an arithmetic number, because the mean of its divisors is an integer number (6766425).

Almost surely, 2^22554745 is an apocalyptic number.

It is an amenable number.

22554745 is a deficient number, since it is larger than the sum of its proper divisors (4510955).

22554745 is an equidigital number, since it uses as much as digits as its factorization.

22554745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510954.

The product of its digits is 56000, while the sum is 34.

The square root of 22554745 is about 4749.1836140541. The cubic root of 22554745 is about 282.5395877380.

The spelling of 22554745 in words is "twenty-two million, five hundred fifty-four thousand, seven hundred forty-five".