855211536 has 45 divisors (see below), whose sum is σ = 2394387021. Its totient is φ = 284953536.

The previous prime is 855211531. The next prime is 855211547. The reversal of 855211536 is 635112558.

It is a happy number.

The square root of 855211536 is 29244.

It is a perfect power (a square), and thus also a powerful number.

855211536 is a `hidden beast` number, since 85 + 521 + 1 + 53 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 805424400 + 49787136 = 28380^2 + 7056^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 855211536.

It is not an unprimeable number, because it can be changed into a prime (855211531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 349710 + ... + 352146.

Almost surely, 2^855211536 is an apocalyptic number.

855211536 is the 29244-th square number.

It is an amenable number.

855211536 is an abundant number, since it is smaller than the sum of its proper divisors (1539175485).

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

855211536 is an equidigital number, since it uses as much as digits as its factorization.

855211536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888 (or 2442 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The cubic root of 855211536 is about 949.2002636060.

Multiplying 855211536 by its sum of digits (36), we get a square (30787615296 = 175464²).

855211536 divided by its sum of digits (36) gives a square (23755876 = 4874²).

The spelling of 855211536 in words is "eight hundred fifty-five million, two hundred eleven thousand, five hundred thirty-six".