855552965 has 32 divisors (see below), whose sum is σ = 1137888000. Its totient is φ = 614237184.

The previous prime is 855552953. The next prime is 855552991. The reversal of 855552965 is 569255558.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 855552965 - 2¹⁰ = 855551941 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, 975107 + ... + 975983.

It is an arithmetic number, because the mean of its divisors is an integer number (35559000).

Almost surely, 2^855552965 is an apocalyptic number.

855552965 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

855552965 is a deficient number, since it is larger than the sum of its proper divisors (282335035).

855552965 is a wasteful number, since it uses less digits than its factorization.

855552965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421.

The product of its digits is 2700000, while the sum is 50.

The square root of 855552965 is about 29249.8370080929. The cubic root of 855552965 is about 949.3265642791.

The spelling of 855552965 in words is "eight hundred fifty-five million, five hundred fifty-two thousand, nine hundred sixty-five".