285131055 has 48 divisors (see below), whose sum is σ = 531008352. Its totient is φ = 130099200.

The previous prime is 285131051. The next prime is 285131071. The reversal of 285131055 is 550131582.

It is not a de Polignac number, because 285131055 - 2² = 285131051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285131051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26235 + ... + 35475.

It is an arithmetic number, because the mean of its divisors is an integer number (11062674).

Almost surely, 2^285131055 is an apocalyptic number.

285131055 is a deficient number, since it is larger than the sum of its proper divisors (245877297).

285131055 is a wasteful number, since it uses less digits than its factorization.

285131055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9288 (or 9277 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 285131055 is about 16885.8240841245. The cubic root of 285131055 is about 658.1852927107.

The spelling of 285131055 in words is "two hundred eighty-five million, one hundred thirty-one thousand, fifty-five".