22051164 has 24 divisors (see below), whose sum is σ = 51578128. Its totient is φ = 7332480.

The previous prime is 22051147. The next prime is 22051171. The reversal of 22051164 is 46115022.

It is a self number, because there is not a number n which added to its sum of digits gives 22051164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3474 + ... + 7494.

Almost surely, 2^22051164 is an apocalyptic number.

It is an amenable number.

22051164 is an abundant number, since it is smaller than the sum of its proper divisors (29526964).

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

22051164 is a wasteful number, since it uses less digits than its factorization.

22051164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485 (or 4483 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22051164 is about 4695.8666931675. The cubic root of 22051164 is about 280.4209823785.

Adding to 22051164 its reverse (46115022), we get a palindrome (68166186).

The spelling of 22051164 in words is "twenty-two million, fifty-one thousand, one hundred sixty-four".