545813999 has 4 divisors (see below), whose sum is σ = 551218200. Its totient is φ = 540409800.

The previous prime is 545813971. The next prime is 545814001. The reversal of 545813999 is 999318545.

It is a happy number.

545813999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999318545 = 5 ⋅199863709.

It is a cyclic number.

It is not a de Polignac number, because 545813999 - 2²⁰ = 544765423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545813999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545813929) 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, 2701949 + ... + 2702150.

It is an arithmetic number, because the mean of its divisors is an integer number (137804550).

Almost surely, 2^545813999 is an apocalyptic number.

545813999 is a deficient number, since it is larger than the sum of its proper divisors (5404201).

545813999 is a wasteful number, since it uses less digits than its factorization.

545813999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404200.

The product of its digits is 1749600, while the sum is 53.

The square root of 545813999 is about 23362.6624980973. The cubic root of 545813999 is about 817.2373811270.

The spelling of 545813999 in words is "five hundred forty-five million, eight hundred thirteen thousand, nine hundred ninety-nine".