285355 has 16 divisors (see below), whose sum is σ = 405504. Its totient is φ = 188640.

The previous prime is 285343. The next prime is 285377. The reversal of 285355 is 553582.

It is not a de Polignac number, because 285355 - 2⁷ = 285227 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (25344).

2²⁸⁵³⁵⁵ is an apocalyptic number.

285355 is a deficient number, since it is larger than the sum of its proper divisors (120149).

285355 is a wasteful number, since it uses less digits than its factorization.

285355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its digits is 6000, while the sum is 28.

The square root of 285355 is about 534.1862970912. The cubic root of 285355 is about 65.8357562889.

The spelling of 285355 in words is "two hundred eighty-five thousand, three hundred fifty-five".