22665455 has 4 divisors (see below), whose sum is σ = 27198552. Its totient is φ = 18132360.

The previous prime is 22665439. The next prime is 22665457. The reversal of 22665455 is 55456622.

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

It is not a de Polignac number, because 22665455 - 2⁴ = 22665439 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 (22665457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2266541 + ... + 2266550.

It is an arithmetic number, because the mean of its divisors is an integer number (6799638).

Almost surely, 2^22665455 is an apocalyptic number.

22665455 is a deficient number, since it is larger than the sum of its proper divisors (4533097).

22665455 is an equidigital number, since it uses as much as digits as its factorization.

22665455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533096.

The product of its digits is 72000, while the sum is 35.

The square root of 22665455 is about 4760.8250335420. The cubic root of 22665455 is about 283.0011154214.

The spelling of 22665455 in words is "twenty-two million, six hundred sixty-five thousand, four hundred fifty-five".