15564041 has 2 divisors, whose sum is σ = 15564042. Its totient is φ = 15564040.

The previous prime is 15564019. The next prime is 15564047. The reversal of 15564041 is 14046551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9634816 + 5929225 = 3104^2 + 2435^2 .

It is an emirp because it is prime and its reverse (14046551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15564041 - 2¹⁰ = 15563017 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 15564041.

It is not a weakly prime, because it can be changed into another prime (15564047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7782020 + 7782021.

It is an arithmetic number, because the mean of its divisors is an integer number (7782021).

Almost surely, 2^15564041 is an apocalyptic number.

It is an amenable number.

15564041 is a deficient number, since it is larger than the sum of its proper divisors (1).

15564041 is an equidigital number, since it uses as much as digits as its factorization.

15564041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 15564041 is about 3945.1287684941. The cubic root of 15564041 is about 249.6744616164.

The spelling of 15564041 in words is "fifteen million, five hundred sixty-four thousand, forty-one".