22550142 has 16 divisors (see below), whose sum is σ = 45234432. Its totient is φ = 7494360.

The previous prime is 22550119. The next prime is 22550147. The reversal of 22550142 is 24105522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550147) 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, 3334 + ... + 7497.

It is an arithmetic number, because the mean of its divisors is an integer number (2827152).

Almost surely, 2^22550142 is an apocalyptic number.

22550142 is an abundant number, since it is smaller than the sum of its proper divisors (22684290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22550142 is a wasteful number, since it uses less digits than its factorization.

22550142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11183.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22550142 is about 4748.6989797207. The cubic root of 22550142 is about 282.5203660886.

Adding to 22550142 its reverse (24105522), we get a palindrome (46655664).

The spelling of 22550142 in words is "twenty-two million, five hundred fifty thousand, one hundred forty-two".