282557096721 has 27 divisors (see below), whose sum is σ = 410983958203. Its totient is φ = 187066947120.

The previous prime is 282557096629. The next prime is 282557096761. The reversal of 282557096721 is 127690755282.

The square root of 282557096721 is 531561.

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

282557096721 is a `hidden beast` number, since 2 + 8 + 2 + 5 + 570 + 9 + 67 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 186072312321 + 96484784400 = 431361^2 + 310620^2 .

It is not a de Polignac number, because 282557096721 - 2²⁵ = 282523542289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (282557096761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 266311531 + ... + 266312591.

Almost surely, 2^282557096721 is an apocalyptic number.

282557096721 is the 531561-st square number.

282557096721 is the 265781-st centered octagonal number.

It is an amenable number.

282557096721 is a deficient number, since it is larger than the sum of its proper divisors (128426861482).

282557096721 is an frugal number, since it uses more digits than its factorization.

282557096721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 282557096721 in words is "two hundred eighty-two billion, five hundred fifty-seven million, ninety-six thousand, seven hundred twenty-one".