22243775 has 12 divisors (see below), whose sum is σ = 29034600. Its totient is φ = 16858080.

The previous prime is 22243733. The next prime is 22243787. The reversal of 22243775 is 57734222.

It is not a de Polignac number, because 22243775 - 2¹⁴ = 22227391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22940 + ... + 23889.

It is an arithmetic number, because the mean of its divisors is an integer number (2419550).

Almost surely, 2^22243775 is an apocalyptic number.

22243775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22243775 is a deficient number, since it is larger than the sum of its proper divisors (6790825).

22243775 is a wasteful number, since it uses less digits than its factorization.

22243775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46858 (or 46853 counting only the distinct ones).

The product of its digits is 23520, while the sum is 32.

The square root of 22243775 is about 4716.3306711892. The cubic root of 22243775 is about 281.2350839826.

Adding to 22243775 its reverse (57734222), we get a palindrome (79977997).

The spelling of 22243775 in words is "twenty-two million, two hundred forty-three thousand, seven hundred seventy-five".