549523 has 8 divisors (see below), whose sum is σ = 606816. Its totient is φ = 494400.

The previous prime is 549517. The next prime is 549533. The reversal of 549523 is 325945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549523 - 2⁹ = 549011 is a prime.

It is a Duffinian number.

549523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 549491 and 549500.

It is not an unprimeable number, because it can be changed into a prime (549503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 1048.

It is an arithmetic number, because the mean of its divisors is an integer number (75852).

2⁵⁴⁹⁵²³ is an apocalyptic number.

549523 is a deficient number, since it is larger than the sum of its proper divisors (57293).

549523 is a wasteful number, since it uses less digits than its factorization.

549523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085.

The product of its digits is 5400, while the sum is 28.

The square root of 549523 is about 741.2981856176. The cubic root of 549523 is about 81.9084343763.

The spelling of 549523 in words is "five hundred forty-nine thousand, five hundred twenty-three".