256241197 has 2 divisors, whose sum is σ = 256241198. Its totient is φ = 256241196.

The previous prime is 256241191. The next prime is 256241203. The reversal of 256241197 is 791142652.

It is a balanced prime because it is at equal distance from previous prime (256241191) and next prime (256241203).

It can be written as a sum of positive squares in only one way, i.e., 247307076 + 8934121 = 15726^2 + 2989^2 .

It is a cyclic number.

It is not a de Polignac number, because 256241197 - 2¹⁵ = 256208429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256241191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128120598 + 128120599.

It is an arithmetic number, because the mean of its divisors is an integer number (128120599).

Almost surely, 2^256241197 is an apocalyptic number.

It is an amenable number.

256241197 is a deficient number, since it is larger than the sum of its proper divisors (1).

256241197 is an equidigital number, since it uses as much as digits as its factorization.

256241197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 256241197 is about 16007.5356316955. The cubic root of 256241197 is about 635.1597729690.

The spelling of 256241197 in words is "two hundred fifty-six million, two hundred forty-one thousand, one hundred ninety-seven".