195055566 has 32 divisors (see below), whose sum is σ = 404438400. Its totient is φ = 62640480.

The previous prime is 195055541. The next prime is 195055579. The reversal of 195055566 is 665550591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106801 + ... + 108611.

It is an arithmetic number, because the mean of its divisors is an integer number (12638700).

Almost surely, 2^195055566 is an apocalyptic number.

195055566 is an abundant number, since it is smaller than the sum of its proper divisors (209382834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195055566 is a wasteful number, since it uses less digits than its factorization.

195055566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464.

The product of its (nonzero) digits is 202500, while the sum is 42.

The square root of 195055566 is about 13966.2294840089. The cubic root of 195055566 is about 579.9440750675.

The spelling of 195055566 in words is "one hundred ninety-five million, fifty-five thousand, five hundred sixty-six".