256073417 has 4 divisors (see below), whose sum is σ = 256742400. Its totient is φ = 255404436.

The previous prime is 256073407. The next prime is 256073449. The reversal of 256073417 is 714370652.

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 256073417 - 2⁴ = 256073401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256073407) 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, 333917 + ... + 334682.

It is an arithmetic number, because the mean of its divisors is an integer number (64185600).

Almost surely, 2^256073417 is an apocalyptic number.

It is an amenable number.

256073417 is a deficient number, since it is larger than the sum of its proper divisors (668983).

256073417 is an equidigital number, since it uses as much as digits as its factorization.

256073417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668982.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 256073417 is about 16002.2941167821. The cubic root of 256073417 is about 635.0211140602.

The spelling of 256073417 in words is "two hundred fifty-six million, seventy-three thousand, four hundred seventeen".