22705559 has 4 divisors (see below), whose sum is σ = 23188704. Its totient is φ = 22222416.

The previous prime is 22705549. The next prime is 22705561. The reversal of 22705559 is 95550722.

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 22705559 - 2²⁴ = 5928343 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 (22705549) 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, 241502 + ... + 241595.

It is an arithmetic number, because the mean of its divisors is an integer number (5797176).

Almost surely, 2^22705559 is an apocalyptic number.

22705559 is a deficient number, since it is larger than the sum of its proper divisors (483145).

22705559 is an equidigital number, since it uses as much as digits as its factorization.

22705559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483144.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 22705559 is about 4765.0350470904. The cubic root of 22705559 is about 283.1679300654.

The spelling of 22705559 in words is "twenty-two million, seven hundred five thousand, five hundred fifty-nine".