22091254 has 4 divisors (see below), whose sum is σ = 33136884. Its totient is φ = 11045626.

The previous prime is 22091239. The next prime is 22091273. The reversal of 22091254 is 45219022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45219022 = 2 ⋅22609511.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5522812 + ... + 5522815.

It is an arithmetic number, because the mean of its divisors is an integer number (8284221).

Almost surely, 2^22091254 is an apocalyptic number.

22091254 is a deficient number, since it is larger than the sum of its proper divisors (11045630).

22091254 is a wasteful number, since it uses less digits than its factorization.

22091254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11045629.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 22091254 is about 4700.1334023621. The cubic root of 22091254 is about 280.5908187824.

The spelling of 22091254 in words is "twenty-two million, ninety-one thousand, two hundred fifty-four".