256048349 has 2 divisors, whose sum is σ = 256048350. Its totient is φ = 256048348.

The previous prime is 256048333. The next prime is 256048357. The reversal of 256048349 is 943840652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168532324 + 87516025 = 12982^2 + 9355^2 .

It is a cyclic number.

It is not a de Polignac number, because 256048349 - 2⁴ = 256048333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256048319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128024174 + 128024175.

It is an arithmetic number, because the mean of its divisors is an integer number (128024175).

Almost surely, 2^256048349 is an apocalyptic number.

It is an amenable number.

256048349 is a deficient number, since it is larger than the sum of its proper divisors (1).

256048349 is an equidigital number, since it uses as much as digits as its factorization.

256048349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 256048349 is about 16001.5108349181. The cubic root of 256048349 is about 635.0003918405. Note that the first 3 decimals are identical.

The spelling of 256048349 in words is "two hundred fifty-six million, forty-eight thousand, three hundred forty-nine".