256572323 has 4 divisors (see below), whose sum is σ = 293225520. Its totient is φ = 219919128.

The previous prime is 256572307. The next prime is 256572331. The reversal of 256572323 is 323275652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256572323 - 2⁴ = 256572307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256572343) 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, 18326588 + ... + 18326601.

It is an arithmetic number, because the mean of its divisors is an integer number (73306380).

Almost surely, 2^256572323 is an apocalyptic number.

256572323 is a deficient number, since it is larger than the sum of its proper divisors (36653197).

256572323 is an equidigital number, since it uses as much as digits as its factorization.

256572323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36653196.

The product of its digits is 75600, while the sum is 35.

The square root of 256572323 is about 16017.8751087652. The cubic root of 256572323 is about 635.4332488821.

The spelling of 256572323 in words is "two hundred fifty-six million, five hundred seventy-two thousand, three hundred twenty-three".