22253405 has 4 divisors (see below), whose sum is σ = 26704092. Its totient is φ = 17802720.

The previous prime is 22253401. The next prime is 22253417. The reversal of 22253405 is 50435222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15225604 + 7027801 = 3902^2 + 2651^2 .

It is not a de Polignac number, because 22253405 - 2² = 22253401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22253401) 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, 2225336 + ... + 2225345.

It is an arithmetic number, because the mean of its divisors is an integer number (6676023).

Almost surely, 2^22253405 is an apocalyptic number.

It is an amenable number.

22253405 is a deficient number, since it is larger than the sum of its proper divisors (4450687).

22253405 is an equidigital number, since it uses as much as digits as its factorization.

22253405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450686.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22253405 is about 4717.3514814989. The cubic root of 22253405 is about 281.2756631726.

Adding to 22253405 its reverse (50435222), we get a palindrome (72688627).

The spelling of 22253405 in words is "twenty-two million, two hundred fifty-three thousand, four hundred five".