549011761 has 3 divisors (see below), whose sum is σ = 549035193. Its totient is φ = 548988330.

The previous prime is 549011759. The next prime is 549011803. The reversal of 549011761 is 167110945.

The square root of 549011761 is 23431.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 549011761 - 2¹ = 549011759 is a prime.

It is a super-2 number, since 2×549011761² = 602827827432642242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549011261) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 11716 + ... + 35146.

It is an arithmetic number, because the mean of its divisors is an integer number (183011731).

Almost surely, 2^549011761 is an apocalyptic number.

549011761 is the 23431-st square number.

549011761 is the 11716-th centered octagonal number.

It is an amenable number.

549011761 is a deficient number, since it is larger than the sum of its proper divisors (23432).

549011761 is an frugal number, since it uses more digits than its factorization.

549011761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46862 (or 23431 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The cubic root of 549011761 is about 818.8302580765.

The spelling of 549011761 in words is "five hundred forty-nine million, eleven thousand, seven hundred sixty-one".