22550890 has 8 divisors (see below), whose sum is σ = 40591620. Its totient is φ = 9020352.

The previous prime is 22550873. The next prime is 22550903. The reversal of 22550890 is 9805522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21132409 + 1418481 = 4597^2 + 1191^2 .

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

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, 1127535 + ... + 1127554.

Almost surely, 2^22550890 is an apocalyptic number.

22550890 is a deficient number, since it is larger than the sum of its proper divisors (18040730).

22550890 is a wasteful number, since it uses less digits than its factorization.

22550890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255096.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 22550890 is about 4748.7777374815. Note that the first 4 decimals coincide. The cubic root of 22550890 is about 282.5234898368.

It can be divided in two parts, 225 and 50890, that added together give a palindrome (51115).

The spelling of 22550890 in words is "twenty-two million, five hundred fifty thousand, eight hundred ninety".