4256071 has 4 divisors (see below), whose sum is σ = 4266000. Its totient is φ = 4246144.

The previous prime is 4256051. The next prime is 4256089. The reversal of 4256071 is 1706524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4256071 is a prime.

It is a super-2 number, since 2×4256071² = 36228280714082, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256051) 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, 4291 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (1066500).

Almost surely, 2^4256071 is an apocalyptic number.

4256071 is a deficient number, since it is larger than the sum of its proper divisors (9929).

4256071 is an equidigital number, since it uses as much as digits as its factorization.

4256071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4256071 is about 2063.0247211316. The cubic root of 4256071 is about 162.0576815375.

The spelling of 4256071 in words is "four million, two hundred fifty-six thousand, seventy-one".