549845563 has 4 divisors (see below), whose sum is σ = 557377768. Its totient is φ = 542313360.

The previous prime is 549845531. The next prime is 549845573. The reversal of 549845563 is 365548945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365548945 = 5 ⋅73109789.

It is a cyclic number.

It is not a de Polignac number, because 549845563 - 2⁵ = 549845531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549845573) 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, 3765993 + ... + 3766138.

It is an arithmetic number, because the mean of its divisors is an integer number (139344442).

Almost surely, 2^549845563 is an apocalyptic number.

549845563 is a deficient number, since it is larger than the sum of its proper divisors (7532205).

549845563 is an equidigital number, since it uses as much as digits as its factorization.

549845563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532204.

The product of its digits is 2592000, while the sum is 49.

The square root of 549845563 is about 23448.7859600449. The cubic root of 549845563 is about 819.2445764405.

The spelling of 549845563 in words is "five hundred forty-nine million, eight hundred forty-five thousand, five hundred sixty-three".