22256554 has 4 divisors (see below), whose sum is σ = 33384834. Its totient is φ = 11128276.

The previous prime is 22256551. The next prime is 22256569. The reversal of 22256554 is 45565222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45565222 = 2 ⋅22782611.

It can be written as a sum of positive squares in only one way, i.e., 17867529 + 4389025 = 4227^2 + 2095^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22256551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5564137 + ... + 5564140.

Almost surely, 2^22256554 is an apocalyptic number.

22256554 is a deficient number, since it is larger than the sum of its proper divisors (11128280).

22256554 is a wasteful number, since it uses less digits than its factorization.

22256554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11128279.

The product of its digits is 24000, while the sum is 31.

The square root of 22256554 is about 4717.6852374867. The cubic root of 22256554 is about 281.2889299856.

The spelling of 22256554 in words is "twenty-two million, two hundred fifty-six thousand, five hundred fifty-four".