545243355541 has 4 divisors (see below), whose sum is σ = 545325218284. Its totient is φ = 545161492800.

The previous prime is 545243355539. The next prime is 545243355563. The reversal of 545243355541 is 145553342545.

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 301154000625 + 244089354916 = 548775^2 + 494054^2 .

It is a cyclic number.

It is not a de Polignac number, because 545243355541 - 2¹ = 545243355539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545243355491 and 545243355500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545243355511) 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, 40921380 + ... + 40934701.

It is an arithmetic number, because the mean of its divisors is an integer number (136331304571).

Almost surely, 2^545243355541 is an apocalyptic number.

It is an amenable number.

545243355541 is a deficient number, since it is larger than the sum of its proper divisors (81862743).

545243355541 is an equidigital number, since it uses as much as digits as its factorization.

545243355541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81862742.

The product of its digits is 3600000, while the sum is 46.

The spelling of 545243355541 in words is "five hundred forty-five billion, two hundred forty-three million, three hundred fifty-five thousand, five hundred forty-one".