15641441 has 2 divisors, whose sum is σ = 15641442. Its totient is φ = 15641440.

The previous prime is 15641429. The next prime is 15641467. The reversal of 15641441 is 14414651.

It is an a-pointer prime, because the next prime (15641467) can be obtained adding 15641441 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13845841 + 1795600 = 3721^2 + 1340^2 .

It is an emirp because it is prime and its reverse (14414651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15641441 - 2¹⁸ = 15379297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15641441.

It is not a weakly prime, because it can be changed into another prime (15641401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7820720 + 7820721.

It is an arithmetic number, because the mean of its divisors is an integer number (7820721).

Almost surely, 2^15641441 is an apocalyptic number.

It is an amenable number.

15641441 is a deficient number, since it is larger than the sum of its proper divisors (1).

15641441 is an equidigital number, since it uses as much as digits as its factorization.

15641441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

The square root of 15641441 is about 3954.9261687167. The cubic root of 15641441 is about 250.0876545964.

The spelling of 15641441 in words is "fifteen million, six hundred forty-one thousand, four hundred forty-one".