10005855 has 16 divisors (see below), whose sum is σ = 16049664. Its totient is φ = 5323040.

The previous prime is 10005833. The next prime is 10005857. The reversal of 10005855 is 55850001.

It is not a de Polignac number, because 10005855 - 2⁵ = 10005823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10005857) 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, 9190 + ... + 10220.

It is an arithmetic number, because the mean of its divisors is an integer number (1003104).

Almost surely, 2^10005855 is an apocalyptic number.

10005855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10005855 is a deficient number, since it is larger than the sum of its proper divisors (6043809).

10005855 is a wasteful number, since it uses less digits than its factorization.

10005855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 10005855 is about 3163.2032814854. The cubic root of 10005855 is about 215.4855081833.

Adding to 10005855 its reverse (55850001), we get a palindrome (65855856).

The spelling of 10005855 in words is "ten million, five thousand, eight hundred fifty-five".