549541 has 4 divisors (see below), whose sum is σ = 555084. Its totient is φ = 544000.

The previous prime is 549533. The next prime is 549547. The reversal of 549541 is 145945.

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

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 73441 = 690^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 549541 - 2³ = 549533 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549547) 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, 2620 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (138771).

2⁵⁴⁹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

549541 is a deficient number, since it is larger than the sum of its proper divisors (5543).

549541 is a wasteful number, since it uses less digits than its factorization.

549541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542.

The product of its digits is 3600, while the sum is 28.

The square root of 549541 is about 741.3103263816. The cubic root of 549541 is about 81.9093286887.

The spelling of 549541 in words is "five hundred forty-nine thousand, five hundred forty-one".