22054231 has 4 divisors (see below), whose sum is σ = 23215000. Its totient is φ = 20893464.

The previous prime is 22054229. The next prime is 22054267. The reversal of 22054231 is 13245022.

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

It is not a de Polignac number, because 22054231 - 2¹ = 22054229 is a prime.

It is a super-2 number, since 2×22054231² = 972778210002722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1160749 = 22054231 / (2 + 2 + 0 + 5 + 4 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22054199 and 22054208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580356 + ... + 580393.

It is an arithmetic number, because the mean of its divisors is an integer number (5803750).

Almost surely, 2^22054231 is an apocalyptic number.

22054231 is a deficient number, since it is larger than the sum of its proper divisors (1160769).

22054231 is a wasteful number, since it uses less digits than its factorization.

22054231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160768.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22054231 is about 4696.1932455980. The cubic root of 22054231 is about 280.4339826186.

Adding to 22054231 its reverse (13245022), we get a palindrome (35299253).

The spelling of 22054231 in words is "twenty-two million, fifty-four thousand, two hundred thirty-one".