13913573 has 2 divisors, whose sum is σ = 13913574. Its totient is φ = 13913572.

The previous prime is 13913569. The next prime is 13913609. The reversal of 13913573 is 37531931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7059649 + 6853924 = 2657^2 + 2618^2 .

It is an emirp because it is prime and its reverse (37531931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13913573 - 2² = 13913569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13913773) 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, 6956786 + 6956787.

It is an arithmetic number, because the mean of its divisors is an integer number (6956787).

Almost surely, 2^13913573 is an apocalyptic number.

It is an amenable number.

13913573 is a deficient number, since it is larger than the sum of its proper divisors (1).

13913573 is an equidigital number, since it uses as much as digits as its factorization.

13913573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8505, while the sum is 32.

The square root of 13913573 is about 3730.0902133863. The cubic root of 13913573 is about 240.5172467004.

The spelling of 13913573 in words is "thirteen million, nine hundred thirteen thousand, five hundred seventy-three".