320255555 has 8 divisors (see below), whose sum is σ = 397558800. Its totient is φ = 247369696.

The previous prime is 320255539. The next prime is 320255557. The reversal of 320255555 is 555552023.

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 320255555 - 2⁴ = 320255539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320255557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104185 + ... + 1104474.

It is an arithmetic number, because the mean of its divisors is an integer number (49694850).

Almost surely, 2^320255555 is an apocalyptic number.

320255555 is a deficient number, since it is larger than the sum of its proper divisors (77303245).

320255555 is a wasteful number, since it uses less digits than its factorization.

320255555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208693.

The product of its (nonzero) digits is 37500, while the sum is 32.

The square root of 320255555 is about 17895.6853738548. The cubic root of 320255555 is about 684.1724105981.

The spelling of 320255555 in words is "three hundred twenty million, two hundred fifty-five thousand, five hundred fifty-five".