22451361 has 4 divisors (see below), whose sum is σ = 29935152. Its totient is φ = 14967572.

The previous prime is 22451353. The next prime is 22451371. The reversal of 22451361 is 16315422.

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 22451361 - 2³ = 22451353 is a prime.

It is a super-2 number, since 2×22451361² = 1008127221504642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22451311) 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, 3741891 + ... + 3741896.

It is an arithmetic number, because the mean of its divisors is an integer number (7483788).

Almost surely, 2^22451361 is an apocalyptic number.

It is an amenable number.

22451361 is a deficient number, since it is larger than the sum of its proper divisors (7483791).

22451361 is an equidigital number, since it uses as much as digits as its factorization.

22451361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483790.

The product of its digits is 1440, while the sum is 24.

The square root of 22451361 is about 4738.2867156811. The cubic root of 22451361 is about 282.1072350080.

Adding to 22451361 its reverse (16315422), we get a palindrome (38766783).

The spelling of 22451361 in words is "twenty-two million, four hundred fifty-one thousand, three hundred sixty-one".