13278901 has 2 divisors, whose sum is σ = 13278902. Its totient is φ = 13278900.

The previous prime is 13278899. The next prime is 13278911. The reversal of 13278901 is 10987231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8994001 + 4284900 = 2999^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 13278901 - 2¹ = 13278899 is a prime.

Together with 13278899, 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 (13278911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6639450 + 6639451.

It is an arithmetic number, because the mean of its divisors is an integer number (6639451).

Almost surely, 2^13278901 is an apocalyptic number.

It is an amenable number.

13278901 is a deficient number, since it is larger than the sum of its proper divisors (1).

13278901 is an equidigital number, since it uses as much as digits as its factorization.

13278901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 13278901 is about 3644.0226398858. The cubic root of 13278901 is about 236.8030968539.

The spelling of 13278901 in words is "thirteen million, two hundred seventy-eight thousand, nine hundred one".