256116533 has 4 divisors (see below), whose sum is σ = 256297440. Its totient is φ = 255935628.

The previous prime is 256116517. The next prime is 256116541. The reversal of 256116533 is 335611652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256116533 - 2⁴ = 256116517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256116533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256116593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88313 + ... + 91166.

It is an arithmetic number, because the mean of its divisors is an integer number (64074360).

Almost surely, 2^256116533 is an apocalyptic number.

It is an amenable number.

256116533 is a deficient number, since it is larger than the sum of its proper divisors (180907).

256116533 is a wasteful number, since it uses less digits than its factorization.

256116533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180906.

The product of its digits is 16200, while the sum is 32.

The square root of 256116533 is about 16003.6412419174. The cubic root of 256116533 is about 635.0567523212.

The spelling of 256116533 in words is "two hundred fifty-six million, one hundred sixteen thousand, five hundred thirty-three".