256057671 has 8 divisors (see below), whose sum is σ = 341593200. Its totient is φ = 170613632.

The previous prime is 256057663. The next prime is 256057679. The reversal of 256057671 is 176750652.

It is an interprime number because it is at equal distance from previous prime (256057663) and next prime (256057679).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256057671 - 2³ = 256057663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256057679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16050 + ... + 27743.

It is an arithmetic number, because the mean of its divisors is an integer number (42699150).

Almost surely, 2^256057671 is an apocalyptic number.

256057671 is a deficient number, since it is larger than the sum of its proper divisors (85535529).

256057671 is a wasteful number, since it uses less digits than its factorization.

256057671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45745.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 256057671 is about 16001.8021172617. The cubic root of 256057671 is about 635.0080979396.

The spelling of 256057671 in words is "two hundred fifty-six million, fifty-seven thousand, six hundred seventy-one".