15641011 has 2 divisors, whose sum is σ = 15641012. Its totient is φ = 15641010.

The previous prime is 15640987. The next prime is 15641023. The reversal of 15641011 is 11014651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15641011 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 15641011.

It is not a weakly prime, because it can be changed into another prime (15641111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7820505 + 7820506.

It is an arithmetic number, because the mean of its divisors is an integer number (7820506).

Almost surely, 2^15641011 is an apocalyptic number.

15641011 is a deficient number, since it is larger than the sum of its proper divisors (1).

15641011 is an equidigital number, since it uses as much as digits as its factorization.

15641011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 15641011 is about 3954.8718057606. The cubic root of 15641011 is about 250.0853628494.

Adding to 15641011 its reverse (11014651), we get a palindrome (26655662).

The spelling of 15641011 in words is "fifteen million, six hundred forty-one thousand, eleven".