549509671 has 4 divisors (see below), whose sum is σ = 559877832. Its totient is φ = 539141512.

The previous prime is 549509663. The next prime is 549509677. The reversal of 549509671 is 176905945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549509671 - 2³ = 549509663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549509677) 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, 5184001 + ... + 5184106.

It is an arithmetic number, because the mean of its divisors is an integer number (139969458).

Almost surely, 2^549509671 is an apocalyptic number.

549509671 is a deficient number, since it is larger than the sum of its proper divisors (10368161).

549509671 is a wasteful number, since it uses less digits than its factorization.

549509671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10368160.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 549509671 is about 23441.6226187523. The cubic root of 549509671 is about 819.0777212538.

The spelling of 549509671 in words is "five hundred forty-nine million, five hundred nine thousand, six hundred seventy-one".