22643151 has 4 divisors (see below), whose sum is σ = 30190872. Its totient is φ = 15095432.

The previous prime is 22643141. The next prime is 22643161. The reversal of 22643151 is 15134622.

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

It is an interprime number because it is at equal distance from previous prime (22643141) and next prime (22643161).

It is a cyclic number.

It is not a de Polignac number, because 22643151 - 2⁶ = 22643087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643141) 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, 3773856 + ... + 3773861.

It is an arithmetic number, because the mean of its divisors is an integer number (7547718).

Almost surely, 2^22643151 is an apocalyptic number.

22643151 is a deficient number, since it is larger than the sum of its proper divisors (7547721).

22643151 is an equidigital number, since it uses as much as digits as its factorization.

22643151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547720.

The product of its digits is 1440, while the sum is 24.

The square root of 22643151 is about 4758.4820058502. The cubic root of 22643151 is about 282.9082556269.

Adding to 22643151 its reverse (15134622), we get a palindrome (37777773).

The spelling of 22643151 in words is "twenty-two million, six hundred forty-three thousand, one hundred fifty-one".