855549952 has 96 divisors (see below), whose sum is σ = 1832725440. Its totient is φ = 398295040.

The previous prime is 855549943. The next prime is 855549953. The reversal of 855549952 is 259945558.

It is a self number, because there is not a number n which added to its sum of digits gives 855549952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855549953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931043 + ... + 1931485.

It is an arithmetic number, because the mean of its divisors is an integer number (19090890).

Almost surely, 2^855549952 is an apocalyptic number.

855549952 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855549952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916362720).

855549952 is an abundant number, since it is smaller than the sum of its proper divisors (977175488).

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

855549952 is a wasteful number, since it uses less digits than its factorization.

855549952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 509 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 52.

The square root of 855549952 is about 29249.7855034870. The cubic root of 855549952 is about 949.3254498637.

The spelling of 855549952 in words is "eight hundred fifty-five million, five hundred forty-nine thousand, nine hundred fifty-two".