855481540 has 24 divisors (see below), whose sum is σ = 1806903000. Its totient is φ = 340213248.

The previous prime is 855481519. The next prime is 855481541. The reversal of 855481540 is 45184558.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31561924 + 823919616 = 5618^2 + 28704^2 .

It is a junction number, because it is equal to n+sod(n) for n = 855481493 and 855481502.

It is not an unprimeable number, because it can be changed into a prime (855481541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120165 + ... + 127084.

It is an arithmetic number, because the mean of its divisors is an integer number (75287625).

Almost surely, 2^855481540 is an apocalyptic number.

It is an amenable number.

855481540 is an abundant number, since it is smaller than the sum of its proper divisors (951421460).

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

855481540 is a wasteful number, since it uses less digits than its factorization.

855481540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247431 (or 247429 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 40.

The square root of 855481540 is about 29248.6160356349. The cubic root of 855481540 is about 949.3001456783.

The spelling of 855481540 in words is "eight hundred fifty-five million, four hundred eighty-one thousand, five hundred forty".