13375861 has 2 divisors, whose sum is σ = 13375862. Its totient is φ = 13375860.

The previous prime is 13375853. The next prime is 13375877. The reversal of 13375861 is 16857331.

13375861 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 53361 = 3650^2 + 231^2 .

It is an emirp because it is prime and its reverse (16857331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13375861 - 2³ = 13375853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13375801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6687930 + 6687931.

It is an arithmetic number, because the mean of its divisors is an integer number (6687931).

Almost surely, 2^13375861 is an apocalyptic number.

It is an amenable number.

13375861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13375861 is an equidigital number, since it uses as much as digits as its factorization.

13375861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 13375861 is about 3657.3024211842. The cubic root of 13375861 is about 237.3780633528.

The spelling of 13375861 in words is "thirteen million, three hundred seventy-five thousand, eight hundred sixty-one".