22054321 has 4 divisors (see below), whose sum is σ = 23351652. Its totient is φ = 20756992.

The previous prime is 22054301. The next prime is 22054337. The reversal of 22054321 is 12345022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 5934096 = 4015^2 + 2436^2 .

It is a cyclic number.

It is not a de Polignac number, because 22054321 - 2²³ = 13665713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22054301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648640 + ... + 648673.

It is an arithmetic number, because the mean of its divisors is an integer number (5837913).

Almost surely, 2^22054321 is an apocalyptic number.

It is an amenable number.

22054321 is a deficient number, since it is larger than the sum of its proper divisors (1297331).

22054321 is a wasteful number, since it uses less digits than its factorization.

22054321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297330.

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

The square root of 22054321 is about 4696.2028278174. The cubic root of 22054321 is about 280.4343640877.

Adding to 22054321 its reverse (12345022), we get a palindrome (34399343).

The spelling of 22054321 in words is "twenty-two million, fifty-four thousand, three hundred twenty-one".