13972261 has 2 divisors, whose sum is σ = 13972262. Its totient is φ = 13972260.

The previous prime is 13972253. The next prime is 13972271. The reversal of 13972261 is 16227931.

13972261 is digitally balanced in base 2, because in such base 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., 13549761 + 422500 = 3681^2 + 650^2 .

It is an emirp because it is prime and its reverse (16227931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13972261 - 2³ = 13972253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13972271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6986130 + 6986131.

It is an arithmetic number, because the mean of its divisors is an integer number (6986131).

Almost surely, 2^13972261 is an apocalyptic number.

It is an amenable number.

13972261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13972261 is an equidigital number, since it uses as much as digits as its factorization.

13972261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 13972261 is about 3737.9487690443. The cubic root of 13972261 is about 240.8549427522.

The spelling of 13972261 in words is "thirteen million, nine hundred seventy-two thousand, two hundred sixty-one".