256264453 has 2 divisors, whose sum is σ = 256264454. Its totient is φ = 256264452.

The previous prime is 256264441. The next prime is 256264469. The reversal of 256264453 is 354462652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144793089 + 111471364 = 12033^2 + 10558^2 .

It is a cyclic number.

It is not a de Polignac number, because 256264453 - 2⁹ = 256263941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256264403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128132226 + 128132227.

It is an arithmetic number, because the mean of its divisors is an integer number (128132227).

Almost surely, 2^256264453 is an apocalyptic number.

It is an amenable number.

256264453 is a deficient number, since it is larger than the sum of its proper divisors (1).

256264453 is an equidigital number, since it uses as much as digits as its factorization.

256264453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 37.

The square root of 256264453 is about 16008.2620230930. The cubic root of 256264453 is about 635.1789877153.

The spelling of 256264453 in words is "two hundred fifty-six million, two hundred sixty-four thousand, four hundred fifty-three".