256534207 has 8 divisors (see below), whose sum is σ = 265470080. Its totient is φ = 247639680.

The previous prime is 256534193. The next prime is 256534231. The reversal of 256534207 is 702435652.

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 256534207 - 2⁷ = 256534079 is a prime.

It is a super-2 number, since 2×256534207² = 131619598722237698, 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 (256534277) 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, 2563 + ... + 22795.

It is an arithmetic number, because the mean of its divisors is an integer number (33183760).

Almost surely, 2^256534207 is an apocalyptic number.

256534207 is a deficient number, since it is larger than the sum of its proper divisors (8935873).

256534207 is a wasteful number, since it uses less digits than its factorization.

256534207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20673.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 256534207 is about 16016.6852688064. The cubic root of 256534207 is about 635.4017809865.

Adding to 256534207 its reverse (702435652), we get a palindrome (958969859).

The spelling of 256534207 in words is "two hundred fifty-six million, five hundred thirty-four thousand, two hundred seven".