13857105 has 16 divisors (see below), whose sum is σ = 22389120. Its totient is φ = 7317888.

The previous prime is 13857101. The next prime is 13857113. The reversal of 13857105 is 50175831.

13857105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13857105 - 2² = 13857101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13857101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2940 + ... + 6029.

It is an arithmetic number, because the mean of its divisors is an integer number (1399320).

Almost surely, 2^13857105 is an apocalyptic number.

13857105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13857105 is a deficient number, since it is larger than the sum of its proper divisors (8532015).

13857105 is a wasteful number, since it uses less digits than its factorization.

13857105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 13857105 is about 3722.5132639119. The cubic root of 13857105 is about 240.1914271357.

The spelling of 13857105 in words is "thirteen million, eight hundred fifty-seven thousand, one hundred five".