13961357 has 2 divisors, whose sum is σ = 13961358. Its totient is φ = 13961356.

The previous prime is 13961329. The next prime is 13961359. The reversal of 13961357 is 75316931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 3759721 = 3194^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 13961357 - 2²² = 9767053 is a prime.

Together with 13961359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13961359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6980678 + 6980679.

It is an arithmetic number, because the mean of its divisors is an integer number (6980679).

Almost surely, 2^13961357 is an apocalyptic number.

It is an amenable number.

13961357 is a deficient number, since it is larger than the sum of its proper divisors (1).

13961357 is an equidigital number, since it uses as much as digits as its factorization.

13961357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 35.

The square root of 13961357 is about 3736.4899304026. The cubic root of 13961357 is about 240.7922717744.

The spelling of 13961357 in words is "thirteen million, nine hundred sixty-one thousand, three hundred fifty-seven".