285545263 has 4 divisors (see below), whose sum is σ = 289159840. Its totient is φ = 281930688.

The previous prime is 285545233. The next prime is 285545269. The reversal of 285545263 is 362545582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285545263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285545269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1807170 + ... + 1807327.

It is an arithmetic number, because the mean of its divisors is an integer number (72289960).

Almost surely, 2^285545263 is an apocalyptic number.

285545263 is a deficient number, since it is larger than the sum of its proper divisors (3614577).

285545263 is an equidigital number, since it uses as much as digits as its factorization.

285545263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614576.

The product of its digits is 288000, while the sum is 40.

The square root of 285545263 is about 16898.0845955984. The cubic root of 285545263 is about 658.5038523128.

The spelling of 285545263 in words is "two hundred eighty-five million, five hundred forty-five thousand, two hundred sixty-three".