15244121 has 8 divisors (see below), whose sum is σ = 16485120. Its totient is φ = 14041408.

The previous prime is 15244093. The next prime is 15244133. The reversal of 15244121 is 12144251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15244121 - 2¹⁰ = 15243097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15244093 and 15244102.

It is not an unprimeable number, because it can be changed into a prime (15244171) 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 7 ways as a sum of consecutive naturals, for example, 8741 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (2060640).

Almost surely, 2^15244121 is an apocalyptic number.

It is an amenable number.

15244121 is a deficient number, since it is larger than the sum of its proper divisors (1240999).

15244121 is a wasteful number, since it uses less digits than its factorization.

15244121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19143.

The product of its digits is 320, while the sum is 20.

The square root of 15244121 is about 3904.3720365764. The cubic root of 15244121 is about 247.9519125026.

Adding to 15244121 its reverse (12144251), we get a palindrome (27388372).

The spelling of 15244121 in words is "fifteen million, two hundred forty-four thousand, one hundred twenty-one".