545352321 has 4 divisors (see below), whose sum is σ = 727136432. Its totient is φ = 363568212.

The previous prime is 545352317. The next prime is 545352323. The reversal of 545352321 is 123253545.

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 not a de Polignac number, because 545352321 - 2² = 545352317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545352323) 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, 90892051 + ... + 90892056.

It is an arithmetic number, because the mean of its divisors is an integer number (181784108).

Almost surely, 2^545352321 is an apocalyptic number.

It is an amenable number.

545352321 is a deficient number, since it is larger than the sum of its proper divisors (181784111).

545352321 is a wasteful number, since it uses less digits than its factorization.

545352321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181784110.

The product of its digits is 18000, while the sum is 30.

The square root of 545352321 is about 23352.7797274757. The cubic root of 545352321 is about 817.0068954362.

The spelling of 545352321 in words is "five hundred forty-five million, three hundred fifty-two thousand, three hundred twenty-one".