545511313 has 4 divisors (see below), whose sum is σ = 560254900. Its totient is φ = 530767728.

The previous prime is 545511301. The next prime is 545511331. The reversal of 545511313 is 313115545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 294225409 + 251285904 = 17153^2 + 15852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545511313 is a prime.

It is a super-2 number, since 2×545511313² = 595165185221967938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545511383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7371738 + ... + 7371811.

It is an arithmetic number, because the mean of its divisors is an integer number (140063725).

Almost surely, 2^545511313 is an apocalyptic number.

It is an amenable number.

545511313 is a deficient number, since it is larger than the sum of its proper divisors (14743587).

545511313 is a wasteful number, since it uses less digits than its factorization.

545511313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14743586.

The product of its digits is 4500, while the sum is 28.

The square root of 545511313 is about 23356.1836137670. The cubic root of 545511313 is about 817.0862844440.

Adding to 545511313 its reverse (313115545), we get a palindrome (858626858).

The spelling of 545511313 in words is "five hundred forty-five million, five hundred eleven thousand, three hundred thirteen".