531568256 has 16 divisors (see below), whose sum is σ = 1058983890. Its totient is φ = 265784064.

The previous prime is 531568243. The next prime is 531568283. The reversal of 531568256 is 652865135.

It can be written as a sum of positive squares in only one way, i.e., 492129856 + 39438400 = 22184^2 + 6280^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2076311 + ... + 2076566.

Almost surely, 2^531568256 is an apocalyptic number.

It is an amenable number.

531568256 is a deficient number, since it is larger than the sum of its proper divisors (527415634).

531568256 is an equidigital number, since it uses as much as digits as its factorization.

531568256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4152891 (or 4152879 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 531568256 is about 23055.7640515338. The cubic root of 531568256 is about 810.0646475862.

The spelling of 531568256 in words is "five hundred thirty-one million, five hundred sixty-eight thousand, two hundred fifty-six".