545161817 has 4 divisors (see below), whose sum is σ = 546585600. Its totient is φ = 543738036.

The previous prime is 545161769. The next prime is 545161853. The reversal of 545161817 is 718161545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545161817 - 2¹⁰ = 545160793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545164817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711317 + ... + 712082.

It is an arithmetic number, because the mean of its divisors is an integer number (136646400).

Almost surely, 2^545161817 is an apocalyptic number.

It is an amenable number.

545161817 is a deficient number, since it is larger than the sum of its proper divisors (1423783).

545161817 is a wasteful number, since it uses less digits than its factorization.

545161817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423782.

The product of its digits is 33600, while the sum is 38.

The square root of 545161817 is about 23348.7005420002. The cubic root of 545161817 is about 816.9117513111.

The spelling of 545161817 in words is "five hundred forty-five million, one hundred sixty-one thousand, eight hundred seventeen".