256073 has 4 divisors (see below), whose sum is σ = 257808. Its totient is φ = 254340.

The previous prime is 256057. The next prime is 256079. The reversal of 256073 is 370652.

256073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 256073 - 2⁴ = 256057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (256079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (64452).

256073 is a Friedman number, since it can be written as 506^2+37, using all its digits and the basic arithmetic operations.

2²⁵⁶⁰⁷³ is an apocalyptic number.

It is an amenable number.

256073 is a deficient number, since it is larger than the sum of its proper divisors (1735).

256073 is a wasteful number, since it uses less digits than its factorization.

256073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 256073 is about 506.0365599440. The cubic root of 256073 is about 63.5020769362.

The spelling of 256073 in words is "two hundred fifty-six thousand, seventy-three".