13611047 has 2 divisors, whose sum is σ = 13611048. Its totient is φ = 13611046.

The previous prime is 13611043. The next prime is 13611053. The reversal of 13611047 is 74011631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13611047 - 2² = 13611043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13611041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805523 + 6805524.

It is an arithmetic number, because the mean of its divisors is an integer number (6805524).

Almost surely, 2^13611047 is an apocalyptic number.

13611047 is a deficient number, since it is larger than the sum of its proper divisors (1).

13611047 is an equidigital number, since it uses as much as digits as its factorization.

13611047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 13611047 is about 3689.3152481185. The cubic root of 13611047 is about 238.7612503493.

Adding to 13611047 its reverse (74011631), we get a palindrome (87622678).

The spelling of 13611047 in words is "thirteen million, six hundred eleven thousand, forty-seven".