22353641 has 2 divisors, whose sum is σ = 22353642. Its totient is φ = 22353640.

The previous prime is 22353637. The next prime is 22353647. The reversal of 22353641 is 14635322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21353641 + 1000000 = 4621^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 22353641 - 2² = 22353637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22353641.

It is not a weakly prime, because it can be changed into another prime (22353647) 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 as a sum of consecutive naturals, namely, 11176820 + 11176821.

It is an arithmetic number, because the mean of its divisors is an integer number (11176821).

Almost surely, 2^22353641 is an apocalyptic number.

It is an amenable number.

22353641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22353641 is an equidigital number, since it uses as much as digits as its factorization.

22353641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 22353641 is about 4727.9637265952. The cubic root of 22353641 is about 281.6973472799.

Adding to 22353641 its reverse (14635322), we get a palindrome (36988963).

The spelling of 22353641 in words is "twenty-two million, three hundred fifty-three thousand, six hundred forty-one".