256850455 has 32 divisors (see below), whose sum is σ = 333849600. Its totient is φ = 189101952.

The previous prime is 256850431. The next prime is 256850459. The reversal of 256850455 is 554058652.

It is a cyclic number.

It is not a de Polignac number, because 256850455 - 2⁷ = 256850327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256850459) 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 in 31 ways as a sum of consecutive naturals, for example, 699682 + ... + 700048.

It is an arithmetic number, because the mean of its divisors is an integer number (10432800).

Almost surely, 2^256850455 is an apocalyptic number.

256850455 is a deficient number, since it is larger than the sum of its proper divisors (76999145).

256850455 is a wasteful number, since it uses less digits than its factorization.

256850455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 240000, while the sum is 40.

The square root of 256850455 is about 16026.5546827757. The cubic root of 256850455 is about 635.6627754538.

The spelling of 256850455 in words is "two hundred fifty-six million, eight hundred fifty thousand, four hundred fifty-five".