10013855 has 16 divisors (see below), whose sum is σ = 13201920. Its totient is φ = 7257888.

The previous prime is 10013851. The next prime is 10013863. The reversal of 10013855 is 55831001.

It is a cyclic number.

It is not a de Polignac number, because 10013855 - 2² = 10013851 is a prime.

It is a super-2 number, since 2×10013855² = 200554583922050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 10013855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10013851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (825120).

Almost surely, 2^10013855 is an apocalyptic number.

10013855 is a deficient number, since it is larger than the sum of its proper divisors (3188065).

10013855 is a wasteful number, since it uses less digits than its factorization.

10013855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 10013855 is about 3164.4675697501. The cubic root of 10013855 is about 215.5429220620.

Adding to 10013855 its reverse (55831001), we get a palindrome (65844856).

The spelling of 10013855 in words is "ten million, thirteen thousand, eight hundred fifty-five".