256017471 has 8 divisors (see below), whose sum is σ = 341745024. Its totient is φ = 170484120.

The previous prime is 256017469. The next prime is 256017473. The reversal of 256017471 is 174710652.

256017471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (256017469) and next prime (256017473).

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

It is not a de Polignac number, because 256017471 - 2¹ = 256017469 is a prime.

It is a super-3 number, since 3×256017471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256017473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45445 + ... + 50766.

It is an arithmetic number, because the mean of its divisors is an integer number (42718128).

Almost surely, 2^256017471 is an apocalyptic number.

256017471 is a deficient number, since it is larger than the sum of its proper divisors (85727553).

256017471 is an equidigital number, since it uses as much as digits as its factorization.

256017471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97101.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 256017471 is about 16000.5459594353. The cubic root of 256017471 is about 634.9748649815.

The spelling of 256017471 in words is "two hundred fifty-six million, seventeen thousand, four hundred seventy-one".