285821053 has 16 divisors (see below), whose sum is σ = 334508544. Its totient is φ = 239126400.

The previous prime is 285821021. The next prime is 285821057. The reversal of 285821053 is 350128582.

It is a cyclic number.

It is not a de Polignac number, because 285821053 - 2⁵ = 285821021 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 (285821057) 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, 149403 + ... + 151303.

It is an arithmetic number, because the mean of its divisors is an integer number (20906784).

Almost surely, 2^285821053 is an apocalyptic number.

It is an amenable number.

285821053 is a deficient number, since it is larger than the sum of its proper divisors (48687491).

285821053 is a wasteful number, since it uses less digits than its factorization.

285821053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 285821053 is about 16906.2430184828. The cubic root of 285821053 is about 658.7157864195.

The spelling of 285821053 in words is "two hundred eighty-five million, eight hundred twenty-one thousand, fifty-three".