1321856255 has 8 divisors (see below), whose sum is σ = 1586794272. Its totient is φ = 1057107168.

The previous prime is 1321856243. The next prime is 1321856273. The reversal of 1321856255 is 5526581231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321856255 - 2¹⁰ = 1321855231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31352 + ... + 60221.

It is an arithmetic number, because the mean of its divisors is an integer number (198349284).

Almost surely, 2^1321856255 is an apocalyptic number.

1321856255 is a deficient number, since it is larger than the sum of its proper divisors (264938017).

1321856255 is an equidigital number, since it uses as much as digits as its factorization.

1321856255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94465.

The product of its digits is 72000, while the sum is 38.

The square root of 1321856255 is about 36357.3411431584. The cubic root of 1321856255 is about 1097.4752716412.

The spelling of 1321856255 in words is "one billion, three hundred twenty-one million, eight hundred fifty-six thousand, two hundred fifty-five".