855280100 has 18 divisors (see below), whose sum is σ = 1855958034. Its totient is φ = 342112000.

The previous prime is 855280099. The next prime is 855280109. The reversal of 855280100 is 1082558.

It can be written as a sum of positive squares in 3 ways, for example, as 292546816 + 562733284 = 17104^2 + 23722^2 .

It is not an unprimeable number, because it can be changed into a prime (855280109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4276301 + ... + 4276500.

Almost surely, 2^855280100 is an apocalyptic number.

It is an amenable number.

855280100 is an abundant number, since it is smaller than the sum of its proper divisors (1000677934).

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

855280100 is a wasteful number, since it uses less digits than its factorization.

855280100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552815 (or 8552808 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 855280100 is about 29245.1722511597. The cubic root of 855280100 is about 949.2256293489.

The spelling of 855280100 in words is "eight hundred fifty-five million, two hundred eighty thousand, one hundred".