549913563 has 12 divisors (see below), whose sum is σ = 814867320. Its totient is φ = 366527808.

The previous prime is 549913517. The next prime is 549913577. The reversal of 549913563 is 365319945.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 549913563 - 2²² = 545719259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549913513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119595 + ... + 124107.

It is an arithmetic number, because the mean of its divisors is an integer number (67905610).

Almost surely, 2^549913563 is an apocalyptic number.

549913563 is a deficient number, since it is larger than the sum of its proper divisors (264953757).

549913563 is an frugal number, since it uses more digits than its factorization.

549913563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035 (or 4516 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 549913563 is about 23450.2358836750. The cubic root of 549913563 is about 819.2783473382.

The spelling of 549913563 in words is "five hundred forty-nine million, nine hundred thirteen thousand, five hundred sixty-three".