320555441 has 4 divisors (see below), whose sum is σ = 337426800. Its totient is φ = 303684084.

The previous prime is 320555429. The next prime is 320555447. The reversal of 320555441 is 144555023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320555441 - 2¹⁰ = 320554417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320555447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8435651 + ... + 8435688.

It is an arithmetic number, because the mean of its divisors is an integer number (84356700).

Almost surely, 2^320555441 is an apocalyptic number.

It is an amenable number.

320555441 is a deficient number, since it is larger than the sum of its proper divisors (16871359).

320555441 is a wasteful number, since it uses less digits than its factorization.

320555441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16871358.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 320555441 is about 17904.0621368448. The cubic root of 320555441 is about 684.3858960644.

The spelling of 320555441 in words is "three hundred twenty million, five hundred fifty-five thousand, four hundred forty-one".