15244881 has 4 divisors (see below), whose sum is σ = 20326512. Its totient is φ = 10163252.

The previous prime is 15244871. The next prime is 15244913. The reversal of 15244881 is 18844251.

15244881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15244881 - 2¹⁰ = 15243857 is a prime.

It is a super-2 number, since 2×15244881² = 464812793408322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15244841) 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, 2540811 + ... + 2540816.

It is an arithmetic number, because the mean of its divisors is an integer number (5081628).

Almost surely, 2^15244881 is an apocalyptic number.

It is an amenable number.

15244881 is a deficient number, since it is larger than the sum of its proper divisors (5081631).

15244881 is an equidigital number, since it uses as much as digits as its factorization.

15244881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081630.

The product of its digits is 10240, while the sum is 33.

The square root of 15244881 is about 3904.4693621541. The cubic root of 15244881 is about 247.9560330052.

The spelling of 15244881 in words is "fifteen million, two hundred forty-four thousand, eight hundred eighty-one".