321479955 has 32 divisors (see below), whose sum is σ = 579366720. Its totient is φ = 169102080.

The previous prime is 321479929. The next prime is 321479969. The reversal of 321479955 is 559974123.

It is a happy number.

It is not a de Polignac number, because 321479955 - 2²⁰ = 320431379 is a prime.

It is a super-2 number, since 2×321479955² = 206698722933604050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 321479955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6456 + ... + 26165.

It is an arithmetic number, because the mean of its divisors is an integer number (18105210).

Almost surely, 2^321479955 is an apocalyptic number.

321479955 is a deficient number, since it is larger than the sum of its proper divisors (257886765).

321479955 is a wasteful number, since it uses less digits than its factorization.

321479955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32708 (or 32702 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 321479955 is about 17929.8621020910. The cubic root of 321479955 is about 685.0432103738.

The spelling of 321479955 in words is "three hundred twenty-one million, four hundred seventy-nine thousand, nine hundred fifty-five".