256453201 has 2 divisors, whose sum is σ = 256453202. Its totient is φ = 256453200.

The previous prime is 256453187. The next prime is 256453229. The reversal of 256453201 is 102354652.

It is an a-pointer prime, because the next prime (256453229) can be obtained adding 256453201 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213890625 + 42562576 = 14625^2 + 6524^2 .

It is a cyclic number.

It is not a de Polignac number, because 256453201 - 2⁹ = 256452689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256453201.

It is not a weakly prime, because it can be changed into another prime (256453271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128226600 + 128226601.

It is an arithmetic number, because the mean of its divisors is an integer number (128226601).

Almost surely, 2^256453201 is an apocalyptic number.

It is an amenable number.

256453201 is a deficient number, since it is larger than the sum of its proper divisors (1).

256453201 is an equidigital number, since it uses as much as digits as its factorization.

256453201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 256453201 is about 16014.1562687517. The cubic root of 256453201 is about 635.3348935125.

The spelling of 256453201 in words is "two hundred fifty-six million, four hundred fifty-three thousand, two hundred one".