549637541 has 4 divisors (see below), whose sum is σ = 551827584. Its totient is φ = 547447500.

The previous prime is 549637531. The next prime is 549637547. The reversal of 549637541 is 145736945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 549637541 - 2⁶ = 549637477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 549637492 and 549637501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549637547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094645 + ... + 1095146.

It is an arithmetic number, because the mean of its divisors is an integer number (137956896).

Almost surely, 2^549637541 is an apocalyptic number.

It is an amenable number.

549637541 is a deficient number, since it is larger than the sum of its proper divisors (2190043).

549637541 is a wasteful number, since it uses less digits than its factorization.

549637541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190042.

The product of its digits is 453600, while the sum is 44.

The square root of 549637541 is about 23444.3498736902. The cubic root of 549637541 is about 819.1412490077.

The spelling of 549637541 in words is "five hundred forty-nine million, six hundred thirty-seven thousand, five hundred forty-one".