22545779 has 4 divisors (see below), whose sum is σ = 22642776. Its totient is φ = 22448784.

The previous prime is 22545769. The next prime is 22545781. The reversal of 22545779 is 97754522.

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 22545779 - 2¹² = 22541683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22545709) 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 in 3 ways as a sum of consecutive naturals, for example, 48149 + ... + 48614.

It is an arithmetic number, because the mean of its divisors is an integer number (5660694).

Almost surely, 2^22545779 is an apocalyptic number.

22545779 is a deficient number, since it is larger than the sum of its proper divisors (96997).

22545779 is an equidigital number, since it uses as much as digits as its factorization.

22545779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96996.

The product of its digits is 176400, while the sum is 41.

The square root of 22545779 is about 4748.2395685138. The cubic root of 22545779 is about 282.5021442393.

The spelling of 22545779 in words is "twenty-two million, five hundred forty-five thousand, seven hundred seventy-nine".