256532471 has 16 divisors (see below), whose sum is σ = 300195840. Its totient is φ = 217092960.

The previous prime is 256532461. The next prime is 256532483. The reversal of 256532471 is 174235652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256532471 is a prime.

It is a super-3 number, since 3×256532471³ (a number of 26 digits) contains 333 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 (256532401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9095 + ... + 24408.

It is an arithmetic number, because the mean of its divisors is an integer number (18762240).

Almost surely, 2^256532471 is an apocalyptic number.

256532471 is a deficient number, since it is larger than the sum of its proper divisors (43663369).

256532471 is a wasteful number, since it uses less digits than its factorization.

256532471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33566.

The product of its digits is 50400, while the sum is 35.

The square root of 256532471 is about 16016.6310752293. The cubic root of 256532471 is about 635.4003477014.

The spelling of 256532471 in words is "two hundred fifty-six million, five hundred thirty-two thousand, four hundred seventy-one".