256364455 has 8 divisors (see below), whose sum is σ = 308086704. Its totient is φ = 204792000.

The previous prime is 256364447. The next prime is 256364477. The reversal of 256364455 is 554463652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 256364455 - 2³ = 256364447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33646 + ... + 40555.

It is an arithmetic number, because the mean of its divisors is an integer number (38510838).

Almost surely, 2^256364455 is an apocalyptic number.

256364455 is a deficient number, since it is larger than the sum of its proper divisors (51722249).

256364455 is an equidigital number, since it uses as much as digits as its factorization.

256364455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74897.

The product of its digits is 432000, while the sum is 40.

The square root of 256364455 is about 16011.3851680609. The cubic root of 256364455 is about 635.2615988719.

The spelling of 256364455 in words is "two hundred fifty-six million, three hundred sixty-four thousand, four hundred fifty-five".