15244091 has 4 divisors (see below), whose sum is σ = 15263352. Its totient is φ = 15224832.

The previous prime is 15244081. The next prime is 15244093. The reversal of 15244091 is 19044251.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15244091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15244091.

It is not an unprimeable number, because it can be changed into a prime (15244093) 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, 8390 + ... + 10043.

It is an arithmetic number, because the mean of its divisors is an integer number (3815838).

Almost surely, 2^15244091 is an apocalyptic number.

15244091 is a deficient number, since it is larger than the sum of its proper divisors (19261).

15244091 is an equidigital number, since it uses as much as digits as its factorization.

15244091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19260.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 15244091 is about 3904.3681947275. The cubic root of 15244091 is about 247.9517498484.

The spelling of 15244091 in words is "fifteen million, two hundred forty-four thousand, ninety-one".