256675547 has 4 divisors (see below), whose sum is σ = 261026040. Its totient is φ = 252325056.

The previous prime is 256675543. The next prime is 256675577. The reversal of 256675547 is 745576652.

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 256675547 - 2² = 256675543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256675543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175158 + ... + 2175275.

It is an arithmetic number, because the mean of its divisors is an integer number (65256510).

Almost surely, 2^256675547 is an apocalyptic number.

256675547 is a deficient number, since it is larger than the sum of its proper divisors (4350493).

256675547 is an equidigital number, since it uses as much as digits as its factorization.

256675547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350492.

The product of its digits is 1764000, while the sum is 47.

The square root of 256675547 is about 16021.0969349792. The cubic root of 256675547 is about 635.5184531454.

The spelling of 256675547 in words is "two hundred fifty-six million, six hundred seventy-five thousand, five hundred forty-seven".