45022 has 4 divisors (see below), whose sum is σ = 67536. Its totient is φ = 22510.

The previous prime is 45013. The next prime is 45053. The reversal of 45022 is 22054.

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: 22054 = 2 ⋅11027.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 44993 and 45011.

It is a congruent number.

It is an unprimeable number.

45022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11254 + ... + 11257.

It is an arithmetic number, because the mean of its divisors is an integer number (16884).

2⁴⁵⁰²² is an apocalyptic number.

45022 is a deficient number, since it is larger than the sum of its proper divisors (22514).

45022 is a wasteful number, since it uses less digits than its factorization.

45022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22513.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 45022 is about 212.1838825170. The cubic root of 45022 is about 35.5747285193.

Adding to 45022 its reverse (22054), we get a palindrome (67076).

The spelling of 45022 in words is "forty-five thousand, twenty-two".