15744161 has 4 divisors (see below), whose sum is σ = 16002324. Its totient is φ = 15486000.

The previous prime is 15744151. The next prime is 15744163. The reversal of 15744161 is 16144751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16144751 = 7 ⋅2306393.

It can be written as a sum of positive squares in 2 ways, for example, as 2560000 + 13184161 = 1600^2 + 3631^2 .

It is a cyclic number.

It is not a de Polignac number, because 15744161 - 2⁶ = 15744097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15744163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128990 + ... + 129111.

It is an arithmetic number, because the mean of its divisors is an integer number (4000581).

Almost surely, 2^15744161 is an apocalyptic number.

It is an amenable number.

15744161 is a deficient number, since it is larger than the sum of its proper divisors (258163).

15744161 is an equidigital number, since it uses as much as digits as its factorization.

15744161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258162.

The product of its digits is 3360, while the sum is 29.

The square root of 15744161 is about 3967.8912535502. The cubic root of 15744161 is about 250.6339165738.

The spelling of 15744161 in words is "fifteen million, seven hundred forty-four thousand, one hundred sixty-one".