102201855 has 32 divisors (see below), whose sum is σ = 196723200. Its totient is φ = 44260992.

The previous prime is 102201797. The next prime is 102201871. The reversal of 102201855 is 558102201.

It is not a de Polignac number, because 102201855 - 2⁶ = 102201791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23620 + ... + 27609.

It is an arithmetic number, because the mean of its divisors is an integer number (6147600).

Almost surely, 2^102201855 is an apocalyptic number.

102201855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102201855 is a deficient number, since it is larger than the sum of its proper divisors (94521345).

102201855 is a wasteful number, since it uses less digits than its factorization.

102201855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51263.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 102201855 is about 10109.4933107451. The cubic root of 102201855 is about 467.5408831148.

The spelling of 102201855 in words is "one hundred two million, two hundred one thousand, eight hundred fifty-five".