13897751 has 8 divisors (see below), whose sum is σ = 15953184. Its totient is φ = 11859840.

The previous prime is 13897717. The next prime is 13897777. The reversal of 13897751 is 15779831.

13897751 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13897751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13897699 and 13897708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 5891.

It is an arithmetic number, because the mean of its divisors is an integer number (1994148).

Almost surely, 2^13897751 is an apocalyptic number.

13897751 is a deficient number, since it is larger than the sum of its proper divisors (2055433).

13897751 is an equidigital number, since it uses as much as digits as its factorization.

13897751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761.

The product of its digits is 52920, while the sum is 41.

The square root of 13897751 is about 3727.9687498690. The cubic root of 13897751 is about 240.4260430183.

Subtracting from 13897751 its product of digits (52920), we obtain a palindrome (13844831).

The spelling of 13897751 in words is "thirteen million, eight hundred ninety-seven thousand, seven hundred fifty-one".