15122243 has 4 divisors (see below), whose sum is σ = 15139320. Its totient is φ = 15105168.

The previous prime is 15122213. The next prime is 15122267. The reversal of 15122243 is 34222151.

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 15122243 - 2⁶ = 15122179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15122213) 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, 7133 + ... + 9006.

It is an arithmetic number, because the mean of its divisors is an integer number (3784830).

Almost surely, 2^15122243 is an apocalyptic number.

15122243 is a deficient number, since it is larger than the sum of its proper divisors (17077).

15122243 is an equidigital number, since it uses as much as digits as its factorization.

15122243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17076.

The product of its digits is 480, while the sum is 20.

The square root of 15122243 is about 3888.7328270273. The cubic root of 15122243 is about 247.2893449539.

Adding to 15122243 its reverse (34222151), we get a palindrome (49344394).

The spelling of 15122243 in words is "fifteen million, one hundred twenty-two thousand, two hundred forty-three".