15122245 has 4 divisors (see below), whose sum is σ = 18146700. Its totient is φ = 12097792.

The previous prime is 15122213. The next prime is 15122267. The reversal of 15122245 is 54222151.

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 10131489 + 4990756 = 3183^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 15122245 - 2⁵ = 15122213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512220 + ... + 1512229.

It is an arithmetic number, because the mean of its divisors is an integer number (4536675).

Almost surely, 2^15122245 is an apocalyptic number.

It is an amenable number.

15122245 is a deficient number, since it is larger than the sum of its proper divisors (3024455).

15122245 is an equidigital number, since it uses as much as digits as its factorization.

15122245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024454.

The product of its digits is 800, while the sum is 22.

The square root of 15122245 is about 3888.7330841805. The cubic root of 15122245 is about 247.2893558557.

Adding to 15122245 its reverse (54222151), we get a palindrome (69344396).

The spelling of 15122245 in words is "fifteen million, one hundred twenty-two thousand, two hundred forty-five".