102855 has 8 divisors (see below), whose sum is σ = 164592. Its totient is φ = 54848.

The previous prime is 102841. The next prime is 102859. The reversal of 102855 is 558201.

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}-102855 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number *n* which divided by its sum of digits gives 102855.

It is not an unprimeable number, because it can be changed into a prime (102859) 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, 3414 + ... + 3443.

It is an arithmetic number, because the mean of its divisors is an integer number (20574).

2^{102855} is an apocalyptic number.

102855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102855 is a deficient number, since it is larger than the sum of its proper divisors (61737).

102855 is an equidigital number, since it uses as much as digits as its factorization.

102855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6865.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 102855 is about 320.7101495120. The cubic root of 102855 is about 46.8534745613.

The spelling of 102855 in words is "one hundred two thousand, eight hundred fifty-five".

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