22545439 has 6 divisors (see below), whose sum is σ = 26226384. Its totient is φ = 19324620.

The previous prime is 22545437. The next prime is 22545443. The reversal of 22545439 is 93454522.

It is not a de Polignac number, because 22545439 - 2¹ = 22545437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230007 + ... + 230104.

It is an arithmetic number, because the mean of its divisors is an integer number (4371064).

Almost surely, 2^22545439 is an apocalyptic number.

22545439 is a deficient number, since it is larger than the sum of its proper divisors (3680945).

22545439 is an equidigital number, since it uses as much as digits as its factorization.

22545439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460125 (or 460118 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 22545439 is about 4748.2037656360. The cubic root of 22545439 is about 282.5007241478.

The spelling of 22545439 in words is "twenty-two million, five hundred forty-five thousand, four hundred thirty-nine".