22200554 has 4 divisors (see below), whose sum is σ = 33300834. Its totient is φ = 11100276.

The previous prime is 22200551. The next prime is 22200601. The reversal of 22200554 is 45500222.

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

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 1288225 = 4573^2 + 1135^2 .

It is not an unprimeable number, because it can be changed into a prime (22200551) 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 as a sum of consecutive naturals, namely, 5550137 + ... + 5550140.

Almost surely, 2^22200554 is an apocalyptic number.

22200554 is a deficient number, since it is larger than the sum of its proper divisors (11100280).

22200554 is a wasteful number, since it uses less digits than its factorization.

22200554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100279.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 22200554 is about 4711.7463853650. The cubic root of 22200554 is about 281.0528136189.

Adding to 22200554 its reverse (45500222), we get a palindrome (67700776).

The spelling of 22200554 in words is "twenty-two million, two hundred thousand, five hundred fifty-four".