545323420221 has 32 divisors (see below), whose sum is σ = 734523820800. Its totient is φ = 359860838400.

The previous prime is 545323420211. The next prime is 545323420283. The reversal of 545323420221 is 122024323545.

It is not a de Polignac number, because 545323420221 - 2⁵ = 545323420189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545323420211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87966480 + ... + 87972678.

It is an arithmetic number, because the mean of its divisors is an integer number (22953869400).

Almost surely, 2^545323420221 is an apocalyptic number.

It is an amenable number.

545323420221 is a deficient number, since it is larger than the sum of its proper divisors (189200400579).

545323420221 is a wasteful number, since it uses less digits than its factorization.

545323420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7157.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 545323420221 its reverse (122024323545), we get a palindrome (667347743766).

The spelling of 545323420221 in words is "five hundred forty-five billion, three hundred twenty-three million, four hundred twenty thousand, two hundred twenty-one".