549591087 has 4 divisors (see below), whose sum is σ = 732788120. Its totient is φ = 366394056.

The previous prime is 549591083. The next prime is 549591089. The reversal of 549591087 is 780195945.

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

It is not a de Polignac number, because 549591087 - 2² = 549591083 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 (549591083) 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 3 ways as a sum of consecutive naturals, for example, 91598512 + ... + 91598517.

It is an arithmetic number, because the mean of its divisors is an integer number (183197030).

Almost surely, 2^549591087 is an apocalyptic number.

549591087 is a deficient number, since it is larger than the sum of its proper divisors (183197033).

549591087 is a wasteful number, since it uses less digits than its factorization.

549591087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183197032.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 549591087 is about 23443.3591236410. The cubic root of 549591087 is about 819.1181710961.

The spelling of 549591087 in words is "five hundred forty-nine million, five hundred ninety-one thousand, eighty-seven".