545555563 has 8 divisors (see below), whose sum is σ = 636216800. Its totient is φ = 467618760.

The previous prime is 545555537. The next prime is 545555579. The reversal of 545555563 is 365555545.

It is not a de Polignac number, because 545555563 - 2⁹ = 545555051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545555503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794928 + ... + 795613.

It is an arithmetic number, because the mean of its divisors is an integer number (79527100).

Almost surely, 2^545555563 is an apocalyptic number.

545555563 is a deficient number, since it is larger than the sum of its proper divisors (90661237).

545555563 is an equidigital number, since it uses as much as digits as its factorization.

545555563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590562 (or 1590548 counting only the distinct ones).

The product of its digits is 1125000, while the sum is 43.

The square root of 545555563 is about 23357.1308811677. The cubic root of 545555563 is about 817.1083769222.

The spelling of 545555563 in words is "five hundred forty-five million, five hundred fifty-five thousand, five hundred sixty-three".