545254220453 has 4 divisors (see below), whose sum is σ = 545792478348. Its totient is φ = 544715962560.

The previous prime is 545254220419. The next prime is 545254220479. The reversal of 545254220453 is 354022452545.

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 173083457089 + 372170763364 = 416033^2 + 610058^2 .

It is a cyclic number.

It is not a de Polignac number, because 545254220453 - 2¹⁰ = 545254219429 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 545254220453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545254229453) 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, 269127428 + ... + 269129453.

It is an arithmetic number, because the mean of its divisors is an integer number (136448119587).

Almost surely, 2^545254220453 is an apocalyptic number.

It is an amenable number.

545254220453 is a deficient number, since it is larger than the sum of its proper divisors (538257895).

545254220453 is a wasteful number, since it uses less digits than its factorization.

545254220453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538257894.

The product of its (nonzero) digits is 960000, while the sum is 41.

Adding to 545254220453 its reverse (354022452545), we get a palindrome (899276672998).

The spelling of 545254220453 in words is "five hundred forty-five billion, two hundred fifty-four million, two hundred twenty thousand, four hundred fifty-three".