256532603 has 2 divisors, whose sum is σ = 256532604. Its totient is φ = 256532602.

The previous prime is 256532569. The next prime is 256532611. The reversal of 256532603 is 306235652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256532603 - 2¹⁰ = 256531579 is a prime.

It is equal to p_14016857 and since 256532603 and 14016857 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256532603.

It is not a weakly prime, because it can be changed into another prime (256532303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128266301 + 128266302.

It is an arithmetic number, because the mean of its divisors is an integer number (128266302).

Almost surely, 2^256532603 is an apocalyptic number.

256532603 is a deficient number, since it is larger than the sum of its proper divisors (1).

256532603 is an equidigital number, since it uses as much as digits as its factorization.

256532603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 256532603 is about 16016.6351959455. The cubic root of 256532603 is about 635.4004566841.

The spelling of 256532603 in words is "two hundred fifty-six million, five hundred thirty-two thousand, six hundred three".