545512145 has 4 divisors (see below), whose sum is σ = 654614580. Its totient is φ = 436409712.

The previous prime is 545512139. The next prime is 545512151. The reversal of 545512145 is 541215545.

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

It is an interprime number because it is at equal distance from previous prime (545512139) and next prime (545512151).

It can be written as a sum of positive squares in 2 ways, for example, as 194212096 + 351300049 = 13936^2 + 18743^2 .

It is a cyclic number.

It is not a de Polignac number, because 545512145 - 2²⁴ = 528734929 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 54551210 + ... + 54551219.

It is an arithmetic number, because the mean of its divisors is an integer number (163653645).

Almost surely, 2^545512145 is an apocalyptic number.

It is an amenable number.

545512145 is a deficient number, since it is larger than the sum of its proper divisors (109102435).

545512145 is a wasteful number, since it uses less digits than its factorization.

545512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109102434.

The product of its digits is 20000, while the sum is 32.

The square root of 545512145 is about 23356.2014248893. The cubic root of 545512145 is about 817.0866998435.

The spelling of 545512145 in words is "five hundred forty-five million, five hundred twelve thousand, one hundred forty-five".