285107253 has 16 divisors (see below), whose sum is σ = 384368640. Its totient is φ = 187968816.

The previous prime is 285107239. The next prime is 285107257. The reversal of 285107253 is 352701582.

It is not a de Polignac number, because 285107253 - 2⁶ = 285107189 is a prime.

It is a super-2 number, since 2×285107253² = 162572291426412018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285107257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138808 + ... + 140846.

It is an arithmetic number, because the mean of its divisors is an integer number (24023040).

Almost surely, 2^285107253 is an apocalyptic number.

It is an amenable number.

285107253 is a deficient number, since it is larger than the sum of its proper divisors (99261387).

285107253 is a wasteful number, since it uses less digits than its factorization.

285107253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 285107253 is about 16885.1192770439. The cubic root of 285107253 is about 658.1669776680.

The spelling of 285107253 in words is "two hundred eighty-five million, one hundred seven thousand, two hundred fifty-three".