13855803 has 12 divisors (see below), whose sum is σ = 20005560. Its totient is φ = 8526336.

The previous prime is 13855789. The next prime is 13855819. The reversal of 13855803 is 30855831.

It is not a de Polignac number, because 13855803 - 2¹² = 13851707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13855873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13158 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (1667130).

Almost surely, 2^13855803 is an apocalyptic number.

13855803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13855803 is a deficient number, since it is larger than the sum of its proper divisors (6149757).

13855803 is a wasteful number, since it uses less digits than its factorization.

13855803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27358 (or 27345 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 13855803 is about 3722.3383779554. The cubic root of 13855803 is about 240.1839041831.

The spelling of 13855803 in words is "thirteen million, eight hundred fifty-five thousand, eight hundred three".