22555951 has 12 divisors (see below), whose sum is σ = 25214760. Its totient is φ = 20010480.

The previous prime is 22555943. The next prime is 22555963. The reversal of 22555951 is 15955522.

It is a happy number.

It is not a de Polignac number, because 22555951 - 2³ = 22555943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555901) 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 11 ways as a sum of consecutive naturals, for example, 19785 + ... + 20893.

It is an arithmetic number, because the mean of its divisors is an integer number (2101230).

Almost surely, 2^22555951 is an apocalyptic number.

22555951 is a deficient number, since it is larger than the sum of its proper divisors (2658809).

22555951 is a wasteful number, since it uses less digits than its factorization.

22555951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 1163 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

The square root of 22555951 is about 4749.3105815476. The cubic root of 22555951 is about 282.5446234362.

The spelling of 22555951 in words is "twenty-two million, five hundred fifty-five thousand, nine hundred fifty-one".