13520071 has 2 divisors, whose sum is σ = 13520072. Its totient is φ = 13520070.

The previous prime is 13520069. The next prime is 13520081. The reversal of 13520071 is 17002531.

13520071 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13520071 - 2¹ = 13520069 is a prime.

Together with 13520069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13520011) 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, 6760035 + 6760036.

It is an arithmetic number, because the mean of its divisors is an integer number (6760036).

Almost surely, 2^13520071 is an apocalyptic number.

13520071 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520071 is an equidigital number, since it uses as much as digits as its factorization.

13520071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 13520071 is about 3676.9649168846. The cubic root of 13520071 is about 238.2281020545.

The spelling of 13520071 in words is "thirteen million, five hundred twenty thousand, seventy-one".