13520147 has 2 divisors, whose sum is σ = 13520148. Its totient is φ = 13520146.

The previous prime is 13520099. The next prime is 13520149. The reversal of 13520147 is 74102531.

13520147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13520147 - 2¹⁶ = 13454611 is a prime.

Together with 13520149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13520149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760073 + 6760074.

It is an arithmetic number, because the mean of its divisors is an integer number (6760074).

Almost surely, 2^13520147 is an apocalyptic number.

13520147 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520147 is an equidigital number, since it uses as much as digits as its factorization.

13520147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13520147 is about 3676.9752514805. The cubic root of 13520147 is about 238.2285484353.

Adding to 13520147 its reverse (74102531), we get a palindrome (87622678).

The spelling of 13520147 in words is "thirteen million, five hundred twenty thousand, one hundred forty-seven".