22371361 has 4 divisors (see below), whose sum is σ = 22677892. Its totient is φ = 22064832.

The previous prime is 22371343. The next prime is 22371403. The reversal of 22371361 is 16317322.

22371361 = 3344² + 3345².

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 11189025 + 11182336 = 3345^2 + 3344^2 .

It is a cyclic number.

It is not a de Polignac number, because 22371361 - 2⁵ = 22371329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22371311) 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, 153156 + ... + 153301.

It is an arithmetic number, because the mean of its divisors is an integer number (5669473).

Almost surely, 2^22371361 is an apocalyptic number.

22371361 is the 3345-th centered square number.

It is an amenable number.

22371361 is a deficient number, since it is larger than the sum of its proper divisors (306531).

22371361 is an equidigital number, since it uses as much as digits as its factorization.

22371361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306530.

The product of its digits is 1512, while the sum is 25.

The square root of 22371361 is about 4729.8373122128. The cubic root of 22371361 is about 281.7717625781.

Adding to 22371361 its reverse (16317322), we get a palindrome (38688683).

The spelling of 22371361 in words is "twenty-two million, three hundred seventy-one thousand, three hundred sixty-one".