256832357 has 2 divisors, whose sum is σ = 256832358. Its totient is φ = 256832356.

The previous prime is 256832341. The next prime is 256832383. The reversal of 256832357 is 753238652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212022721 + 44809636 = 14561^2 + 6694^2 .

It is a cyclic number.

It is not a de Polignac number, because 256832357 - 2⁴ = 256832341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256832327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128416178 + 128416179.

It is an arithmetic number, because the mean of its divisors is an integer number (128416179).

Almost surely, 2^256832357 is an apocalyptic number.

It is an amenable number.

256832357 is a deficient number, since it is larger than the sum of its proper divisors (1).

256832357 is an equidigital number, since it uses as much as digits as its factorization.

256832357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 256832357 is about 16025.9900474198. The cubic root of 256832357 is about 635.6478452419.

The spelling of 256832357 in words is "two hundred fifty-six million, eight hundred thirty-two thousand, three hundred fifty-seven".