256180271 has 4 divisors (see below), whose sum is σ = 256654344. Its totient is φ = 255706200.

The previous prime is 256180241. The next prime is 256180277. The reversal of 256180271 is 172081652.

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 256180271 - 2⁶ = 256180207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256180277) 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, 236225 + ... + 237306.

It is an arithmetic number, because the mean of its divisors is an integer number (64163586).

Almost surely, 2^256180271 is an apocalyptic number.

256180271 is a deficient number, since it is larger than the sum of its proper divisors (474073).

256180271 is an equidigital number, since it uses as much as digits as its factorization.

256180271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474072.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 256180271 is about 16005.6324773500. The cubic root of 256180271 is about 635.1094287201.

The spelling of 256180271 in words is "two hundred fifty-six million, one hundred eighty thousand, two hundred seventy-one".