102202855 has 4 divisors (see below), whose sum is σ = 122643432. Its totient is φ = 81762280.

The previous prime is 102202829. The next prime is 102202871. The reversal of 102202855 is 558202201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102202855 - 2⁹ = 102202343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10220281 + ... + 10220290.

It is an arithmetic number, because the mean of its divisors is an integer number (30660858).

Almost surely, 2^102202855 is an apocalyptic number.

102202855 is a deficient number, since it is larger than the sum of its proper divisors (20440577).

102202855 is an equidigital number, since it uses as much as digits as its factorization.

102202855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20440576.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 102202855 is about 10109.5427690870. The cubic root of 102202855 is about 467.5424080035.

The spelling of 102202855 in words is "one hundred two million, two hundred two thousand, eight hundred fifty-five".