256056737 has 6 divisors (see below), whose sum is σ = 271188774. Its totient is φ = 240932480.

The previous prime is 256056719. The next prime is 256056739. The reversal of 256056737 is 737650652.

256056737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 99281296 + 156775441 = 9964^2 + 12521^2 .

It is not a de Polignac number, because 256056737 - 2¹⁶ = 255991201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256056694 and 256056703.

It is not an unprimeable number, because it can be changed into a prime (256056739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64037 + ... + 67917.

It is an arithmetic number, because the mean of its divisors is an integer number (45198129).

Almost surely, 2^256056737 is an apocalyptic number.

It is an amenable number.

256056737 is a deficient number, since it is larger than the sum of its proper divisors (15132037).

256056737 is an frugal number, since it uses more digits than its factorization.

256056737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779 (or 3898 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The square root of 256056737 is about 16001.7729330221. The cubic root of 256056737 is about 635.0073258501.

The spelling of 256056737 in words is "two hundred fifty-six million, fifty-six thousand, seven hundred thirty-seven".