22835621 has 2 divisors, whose sum is σ = 22835622. Its totient is φ = 22835620.

The previous prime is 22835611. The next prime is 22835629. The reversal of 22835621 is 12653822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 5313025 = 4186^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22835621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22835629) 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, 11417810 + 11417811.

It is an arithmetic number, because the mean of its divisors is an integer number (11417811).

Almost surely, 2^22835621 is an apocalyptic number.

It is an amenable number.

22835621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22835621 is an equidigital number, since it uses as much as digits as its factorization.

22835621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 22835621 is about 4778.6630975619. The cubic root of 22835621 is about 283.7075818781.

The spelling of 22835621 in words is "twenty-two million, eight hundred thirty-five thousand, six hundred twenty-one".