256939101 has 32 divisors (see below), whose sum is σ = 395712000. Its totient is φ = 164574144.

The previous prime is 256939099. The next prime is 256939103. The reversal of 256939101 is 101939652.

256939101 is a `hidden beast` number, since 2 + 569 + 3 + 91 + 0 + 1 = 666.

256939101 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 (256939099) and next prime (256939103).

It is not a de Polignac number, because 256939101 - 2¹ = 256939099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256939103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186451 + ... + 187823.

It is an arithmetic number, because the mean of its divisors is an integer number (12366000).

Almost surely, 2^256939101 is an apocalyptic number.

It is an amenable number.

256939101 is a deficient number, since it is larger than the sum of its proper divisors (138772899).

256939101 is a wasteful number, since it uses less digits than its factorization.

256939101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 256939101 is about 16029.3200417235. The cubic root of 256939101 is about 635.7358951492.

The spelling of 256939101 in words is "two hundred fifty-six million, nine hundred thirty-nine thousand, one hundred one".