256532377 has 2 divisors, whose sum is σ = 256532378. Its totient is φ = 256532376.

The previous prime is 256532371. The next prime is 256532383. The reversal of 256532377 is 773235652.

It is a balanced prime because it is at equal distance from previous prime (256532371) and next prime (256532383).

It can be written as a sum of positive squares in only one way, i.e., 147768336 + 108764041 = 12156^2 + 10429^2 .

It is a cyclic number.

It is not a de Polignac number, because 256532377 - 2⁷ = 256532249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256532371) 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, 128266188 + 128266189.

It is an arithmetic number, because the mean of its divisors is an integer number (128266189).

Almost surely, 2^256532377 is an apocalyptic number.

It is an amenable number.

256532377 is a deficient number, since it is larger than the sum of its proper divisors (1).

256532377 is an equidigital number, since it uses as much as digits as its factorization.

256532377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 40.

The square root of 256532377 is about 16016.6281407792. The cubic root of 256532377 is about 635.4002700925.

The spelling of 256532377 in words is "two hundred fifty-six million, five hundred thirty-two thousand, three hundred seventy-seven".