285488244721 has 3 divisors (see below), whose sum is σ = 285488779033. Its totient is φ = 285487710410.

The previous prime is 285488244709. The next prime is 285488244733. The reversal of 285488244721 is 127442884582.

The square root of 285488244721 is 534311.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (285488244709) and next prime (285488244733).

It is not a de Polignac number, because 285488244721 - 2³⁷ = 148049291249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285488244751) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 267156 + ... + 801466.

Almost surely, 2^285488244721 is an apocalyptic number.

285488244721 is the 534311-st square number.

285488244721 is the 267156-th centered octagonal number.

It is an amenable number.

285488244721 is a deficient number, since it is larger than the sum of its proper divisors (534312).

285488244721 is an frugal number, since it uses more digits than its factorization.

285488244721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068622 (or 534311 counting only the distinct ones).

The product of its digits is 9175040, while the sum is 55.

The spelling of 285488244721 in words is "two hundred eighty-five billion, four hundred eighty-eight million, two hundred forty-four thousand, seven hundred twenty-one".