549487 has 4 divisors (see below), whose sum is σ = 564376. Its totient is φ = 534600.

The previous prime is 549481. The next prime is 549503. The reversal of 549487 is 784945.

549487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 14851 = 549487 / (5 + 4 + 9 + 4 + 8 + 7).

It is a Duffinian number.

549487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549481) 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, 7389 + ... + 7462.

It is an arithmetic number, because the mean of its divisors is an integer number (141094).

2⁵⁴⁹⁴⁸⁷ is an apocalyptic number.

549487 is a deficient number, since it is larger than the sum of its proper divisors (14889).

549487 is a wasteful number, since it uses less digits than its factorization.

549487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14888.

The product of its digits is 40320, while the sum is 37.

The square root of 549487 is about 741.2739034932. The cubic root of 549487 is about 81.9066456929.

The spelling of 549487 in words is "five hundred forty-nine thousand, four hundred eighty-seven".