22344521 has 4 divisors (see below), whose sum is σ = 23065344. Its totient is φ = 21623700.

The previous prime is 22344499. The next prime is 22344541. The reversal of 22344521 is 12544322.

It is a happy number.

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 22344521 - 2⁶ = 22344457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22344541) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 360365 + ... + 360426.

It is an arithmetic number, because the mean of its divisors is an integer number (5766336).

Almost surely, 2^22344521 is an apocalyptic number.

It is an amenable number.

22344521 is a deficient number, since it is larger than the sum of its proper divisors (720823).

22344521 is an equidigital number, since it uses as much as digits as its factorization.

22344521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720822.

The product of its digits is 1920, while the sum is 23.

The square root of 22344521 is about 4726.9991537973. Note that the first 3 decimals coincide. The cubic root of 22344521 is about 281.6590324289.

Adding to 22344521 its reverse (12544322), we get a palindrome (34888843).

It can be divided in two parts, 223 and 44521, that added together give a palindrome (44744).

The spelling of 22344521 in words is "twenty-two million, three hundred forty-four thousand, five hundred twenty-one".