22645543 has 4 divisors (see below), whose sum is σ = 22662720. Its totient is φ = 22628368.

The previous prime is 22645541. The next prime is 22645559. The reversal of 22645543 is 34554622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22645543 - 2¹ = 22645541 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 (22645541) 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 in 3 ways as a sum of consecutive naturals, for example, 6430 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (5665680).

Almost surely, 2^22645543 is an apocalyptic number.

22645543 is a deficient number, since it is larger than the sum of its proper divisors (17177).

22645543 is a wasteful number, since it uses less digits than its factorization.

22645543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17176.

The product of its digits is 28800, while the sum is 31.

The square root of 22645543 is about 4758.7333398710. The cubic root of 22645543 is about 282.9182173253.

The spelling of 22645543 in words is "twenty-two million, six hundred forty-five thousand, five hundred forty-three".