13971851 has 2 divisors, whose sum is σ = 13971852. Its totient is φ = 13971850.

The previous prime is 13971817. The next prime is 13971869. The reversal of 13971851 is 15817931.

13971851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (15817931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13971851 is a prime.

It is a Chen prime.

It is equal to p₉₀₈₃₉₆ and since 13971851 and 908396 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13971151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985925 + 6985926.

It is an arithmetic number, because the mean of its divisors is an integer number (6985926).

Almost surely, 2^13971851 is an apocalyptic number.

13971851 is a deficient number, since it is larger than the sum of its proper divisors (1).

13971851 is an equidigital number, since it uses as much as digits as its factorization.

13971851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 35.

The square root of 13971851 is about 3737.8939257288. The cubic root of 13971851 is about 240.8525868583.

The spelling of 13971851 in words is "thirteen million, nine hundred seventy-one thousand, eight hundred fifty-one".