256044351 has 4 divisors (see below), whose sum is σ = 341392472. Its totient is φ = 170696232.

The previous prime is 256044337. The next prime is 256044359. The reversal of 256044351 is 153440652.

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

It is not a de Polignac number, because 256044351 - 2⁷ = 256044223 is a prime.

It is a super-2 number, since 2×256044351² = 131117419358022402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256044359) 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, 42674056 + ... + 42674061.

It is an arithmetic number, because the mean of its divisors is an integer number (85348118).

Almost surely, 2^256044351 is an apocalyptic number.

256044351 is a deficient number, since it is larger than the sum of its proper divisors (85348121).

256044351 is an equidigital number, since it uses as much as digits as its factorization.

256044351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85348120.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 256044351 is about 16001.3859087268. The cubic root of 256044351 is about 634.9970868075.

The spelling of 256044351 in words is "two hundred fifty-six million, forty-four thousand, three hundred fifty-one".