22865545 has 12 divisors (see below), whose sum is σ = 27918540. Its totient is φ = 17977920.

The previous prime is 22865539. The next prime is 22865581. The reversal of 22865545 is 54556822.

It can be written as a sum of positive squares in 6 ways, for example, as 2534464 + 20331081 = 1592^2 + 4509^2 .

It is not a de Polignac number, because 22865545 - 2¹¹ = 22863497 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17991 + ... + 19219.

It is an arithmetic number, because the mean of its divisors is an integer number (2326545).

Almost surely, 2^22865545 is an apocalyptic number.

It is an amenable number.

22865545 is a deficient number, since it is larger than the sum of its proper divisors (5052995).

22865545 is an equidigital number, since it uses as much as digits as its factorization.

22865545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1295 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

The square root of 22865545 is about 4781.7930737329. The cubic root of 22865545 is about 283.8314520963.

The spelling of 22865545 in words is "twenty-two million, eight hundred sixty-five thousand, five hundred forty-five".