22555766 has 4 divisors (see below), whose sum is σ = 33833652. Its totient is φ = 11277882.

The previous prime is 22555739. The next prime is 22555807. The reversal of 22555766 is 66755522.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5638940 + ... + 5638943.

It is an arithmetic number, because the mean of its divisors is an integer number (8458413).

Almost surely, 2^22555766 is an apocalyptic number.

22555766 is a deficient number, since it is larger than the sum of its proper divisors (11277886).

22555766 is a wasteful number, since it uses less digits than its factorization.

22555766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277885.

The product of its digits is 126000, while the sum is 38.

The square root of 22555766 is about 4749.2911049966. The cubic root of 22555766 is about 282.5438509735.

The spelling of 22555766 in words is "twenty-two million, five hundred fifty-five thousand, seven hundred sixty-six".