545323535021 has 4 divisors (see below), whose sum is σ = 550722778044. Its totient is φ = 539924292000.

The previous prime is 545323534997. The next prime is 545323535023. The reversal of 545323535021 is 120535323545.

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 480545649796 + 64777885225 = 693214^2 + 254515^2 .

It is a cyclic number.

It is not a de Polignac number, because 545323535021 - 2⁶ = 545323534957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545323535023) 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, 2699621360 + ... + 2699621561.

It is an arithmetic number, because the mean of its divisors is an integer number (137680694511).

Almost surely, 2^545323535021 is an apocalyptic number.

It is an amenable number.

545323535021 is a deficient number, since it is larger than the sum of its proper divisors (5399243023).

545323535021 is a wasteful number, since it uses less digits than its factorization.

545323535021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399243022.

The product of its (nonzero) digits is 270000, while the sum is 38.

Adding to 545323535021 its reverse (120535323545), we get a palindrome (665858858566).

The spelling of 545323535021 in words is "five hundred forty-five billion, three hundred twenty-three million, five hundred thirty-five thousand, twenty-one".