22205554 has 8 divisors (see below), whose sum is σ = 38066688. Its totient is φ = 9516660.

The previous prime is 22205549. The next prime is 22205563. The reversal of 22205554 is 45550222.

22205554 = 877² + 878² + ... + 904².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793042 + ... + 793069.

It is an arithmetic number, because the mean of its divisors is an integer number (4758336).

Almost surely, 2^22205554 is an apocalyptic number.

22205554 is a deficient number, since it is larger than the sum of its proper divisors (15861134).

22205554 is a wasteful number, since it uses less digits than its factorization.

22205554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586120.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 22205554 is about 4712.2769443232. The cubic root of 22205554 is about 281.0739115697.

Adding to 22205554 its reverse (45550222), we get a palindrome (67755776).

The spelling of 22205554 in words is "twenty-two million, two hundred five thousand, five hundred fifty-four".