855055040 has 112 divisors (see below), whose sum is σ = 2353665600. Its totient is φ = 289800192.

The previous prime is 855055037. The next prime is 855055049. The reversal of 855055040 is 40550558.

855055040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×855055040² = 1462238242858803200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 855054988 and 855055006.

It is not an unprimeable number, because it can be changed into a prime (855055049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197216 + ... + 201504.

Almost surely, 2^855055040 is an apocalyptic number.

855055040 is a gapful number since it is divisible by the number (80) 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 855055040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176832800).

855055040 is an abundant number, since it is smaller than the sum of its proper divisors (1498610560).

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

855055040 is a wasteful number, since it uses less digits than its factorization.

855055040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402 (or 4392 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 855055040 is about 29241.3241834223. The cubic root of 855055040 is about 949.1423617108.

The spelling of 855055040 in words is "eight hundred fifty-five million, fifty-five thousand, forty".