545404085 has 4 divisors (see below), whose sum is σ = 654484908. Its totient is φ = 436323264.

The previous prime is 545404061. The next prime is 545404091. The reversal of 545404085 is 580404545.

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 238208356 + 307195729 = 15434^2 + 17527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545404085 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54540404 + ... + 54540413.

It is an arithmetic number, because the mean of its divisors is an integer number (163621227).

Almost surely, 2^545404085 is an apocalyptic number.

It is an amenable number.

545404085 is a deficient number, since it is larger than the sum of its proper divisors (109080823).

545404085 is a wasteful number, since it uses less digits than its factorization.

545404085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109080822.

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 545404085 is about 23353.8880060687. Note that the first 3 decimals coincide. The cubic root of 545404085 is about 817.0327442959.

The spelling of 545404085 in words is "five hundred forty-five million, four hundred four thousand, eighty-five".