15244945 has 4 divisors (see below), whose sum is σ = 18293940. Its totient is φ = 12195952.

The previous prime is 15244939. The next prime is 15244969. The reversal of 15244945 is 54944251.

15244945 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 6765201 = 2912^2 + 2601^2 .

It is a cyclic number.

It is not a de Polignac number, because 15244945 - 2⁵ = 15244913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15244945.

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, 1524490 + ... + 1524499.

It is an arithmetic number, because the mean of its divisors is an integer number (4573485).

Almost surely, 2^15244945 is an apocalyptic number.

It is an amenable number.

15244945 is a deficient number, since it is larger than the sum of its proper divisors (3048995).

15244945 is an equidigital number, since it uses as much as digits as its factorization.

15244945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048994.

The product of its digits is 28800, while the sum is 34.

The square root of 15244945 is about 3904.4775578815. The cubic root of 15244945 is about 247.9563799887.

The spelling of 15244945 in words is "fifteen million, two hundred forty-four thousand, nine hundred forty-five".