22545623 has 2 divisors, whose sum is σ = 22545624. Its totient is φ = 22545622.

The previous prime is 22545583. The next prime is 22545629. The reversal of 22545623 is 32654522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22545623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22545629) 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 as a sum of consecutive naturals, namely, 11272811 + 11272812.

It is an arithmetic number, because the mean of its divisors is an integer number (11272812).

Almost surely, 2^22545623 is an apocalyptic number.

22545623 is a deficient number, since it is larger than the sum of its proper divisors (1).

22545623 is an equidigital number, since it uses as much as digits as its factorization.

22545623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 29.

The square root of 22545623 is about 4748.2231413446. The cubic root of 22545623 is about 282.5014926697.

The spelling of 22545623 in words is "twenty-two million, five hundred forty-five thousand, six hundred twenty-three".