22500554 has 16 divisors (see below), whose sum is σ = 36610056. Its totient is φ = 10329600.

The previous prime is 22500547. The next prime is 22500557. The reversal of 22500554 is 45500522.

It can be written as a sum of positive squares in 4 ways, for example, as 15880225 + 6620329 = 3985^2 + 2573^2 .

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (22500557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6677 + ... + 9464.

Almost surely, 2^22500554 is an apocalyptic number.

22500554 is a deficient number, since it is larger than the sum of its proper divisors (14109502).

22500554 is a wasteful number, since it uses less digits than its factorization.

22500554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16201.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22500554 is about 4743.4748866206. The cubic root of 22500554 is about 282.3131256851.

The spelling of 22500554 in words is "twenty-two million, five hundred thousand, five hundred fifty-four".