22254247 has 4 divisors (see below), whose sum is σ = 22265176. Its totient is φ = 22243320.

The previous prime is 22254233. The next prime is 22254257. The reversal of 22254247 is 74245222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22254247 - 2⁷ = 22254119 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 (22254257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (5566294).

Almost surely, 2^22254247 is an apocalyptic number.

22254247 is a deficient number, since it is larger than the sum of its proper divisors (10929).

22254247 is an equidigital number, since it uses as much as digits as its factorization.

22254247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10928.

The product of its digits is 8960, while the sum is 28.

The square root of 22254247 is about 4717.4407256478. The cubic root of 22254247 is about 281.2792106615.

Adding to 22254247 its reverse (74245222), we get a palindrome (96499469).

The spelling of 22254247 in words is "twenty-two million, two hundred fifty-four thousand, two hundred forty-seven".