22552321 has 4 divisors (see below), whose sum is σ = 24602544. Its totient is φ = 20502100.

The previous prime is 22552307. The next prime is 22552381. The reversal of 22552321 is 12325522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22552321 - 2²³ = 14163713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22552292 and 22552301.

It is not an unprimeable number, because it can be changed into a prime (22552301) 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, 1025095 + ... + 1025116.

It is an arithmetic number, because the mean of its divisors is an integer number (6150636).

Almost surely, 2^22552321 is an apocalyptic number.

It is an amenable number.

22552321 is a deficient number, since it is larger than the sum of its proper divisors (2050223).

22552321 is a wasteful number, since it uses less digits than its factorization.

22552321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050222.

The product of its digits is 1200, while the sum is 22.

The square root of 22552321 is about 4748.9284054405. The cubic root of 22552321 is about 282.5294656920.

Adding to 22552321 its reverse (12325522), we get a palindrome (34877843).

The spelling of 22552321 in words is "twenty-two million, five hundred fifty-two thousand, three hundred twenty-one".