320555001 has 24 divisors (see below), whose sum is σ = 467511744. Its totient is φ = 194214240.

The previous prime is 320554999. The next prime is 320555003. The reversal of 320555001 is 100555023.

It is an interprime number because it is at equal distance from previous prime (320554999) and next prime (320555003).

It is not a de Polignac number, because 320555001 - 2¹ = 320554999 is a prime.

It is a super-2 number, since 2×320555001² = 205511017332220002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320555003) 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 23 ways as a sum of consecutive naturals, for example, 174156 + ... + 175986.

It is an arithmetic number, because the mean of its divisors is an integer number (19479656).

Almost surely, 2^320555001 is an apocalyptic number.

It is an amenable number.

320555001 is a deficient number, since it is larger than the sum of its proper divisors (146956743).

320555001 is a wasteful number, since it uses less digits than its factorization.

320555001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 320555001 is about 17904.0498491263. The cubic root of 320555001 is about 684.3855829309.

The spelling of 320555001 in words is "three hundred twenty million, five hundred fifty-five thousand, one".