304540045 has 4 divisors (see below), whose sum is σ = 365448060. Its totient is φ = 243632032.

The previous prime is 304540021. The next prime is 304540051. The reversal of 304540045 is 540045403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540045403 = 22861 ⋅23623.

It can be written as a sum of positive squares in 2 ways, for example, as 90269001 + 214271044 = 9501^2 + 14638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304540045 is a prime.

It is a super-3 number, since 3×304540045³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30454000 + ... + 30454009.

It is an arithmetic number, because the mean of its divisors is an integer number (91362015).

Almost surely, 2^304540045 is an apocalyptic number.

It is an amenable number.

304540045 is a deficient number, since it is larger than the sum of its proper divisors (60908015).

304540045 is an equidigital number, since it uses as much as digits as its factorization.

304540045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60908014.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 304540045 is about 17451.0757548066. The cubic root of 304540045 is about 672.7930076628.

Adding to 304540045 its reverse (540045403), we get a palindrome (844585448).

The spelling of 304540045 in words is "three hundred four million, five hundred forty thousand, forty-five".