256474097 has 4 divisors (see below), whose sum is σ = 279789936. Its totient is φ = 233158260.

The previous prime is 256474093. The next prime is 256474117. The reversal of 256474097 is 790474652.

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 256474097 - 2² = 256474093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256474093) 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, 11657903 + ... + 11657924.

It is an arithmetic number, because the mean of its divisors is an integer number (69947484).

Almost surely, 2^256474097 is an apocalyptic number.

It is an amenable number.

256474097 is a deficient number, since it is larger than the sum of its proper divisors (23315839).

256474097 is a wasteful number, since it uses less digits than its factorization.

256474097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23315838.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 256474097 is about 16014.8086782203. The cubic root of 256474097 is about 635.3521488991.

The spelling of 256474097 in words is "two hundred fifty-six million, four hundred seventy-four thousand, ninety-seven".