Search a number
-
+
15031441 is a prime number
BaseRepresentation
bin111001010101…
…110010010001
31001021200021001
4321111302101
512322001231
61254102001
7241523305
oct71256221
931250231
1015031441
118537387
12504a901
133163a59
141dd3d05
1514bdb61
hexe55c91

15031441 has 2 divisors, whose sum is σ = 15031442. Its totient is φ = 15031440.

The previous prime is 15031439. The next prime is 15031447. The reversal of 15031441 is 14413051.

15031441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 1635841 = 3660^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 15031441 - 21 = 15031439 is a prime.

Together with 15031439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15031447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7515720 + 7515721.

It is an arithmetic number, because the mean of its divisors is an integer number (7515721).

Almost surely, 215031441 is an apocalyptic number.

It is an amenable number.

15031441 is a deficient number, since it is larger than the sum of its proper divisors (1).

15031441 is an equidigital number, since it uses as much as digits as its factorization.

15031441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 15031441 is about 3877.0402370881. The cubic root of 15031441 is about 246.7933986783.

Adding to 15031441 its reverse (14413051), we get a palindrome (29444492).

The spelling of 15031441 in words is "fifteen million, thirty-one thousand, four hundred forty-one".