544991 has 4 divisors (see below), whose sum is σ = 548184. Its totient is φ = 541800.

The previous prime is 544979. The next prime is 545023. The reversal of 544991 is 199445.

544991 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 not a de Polignac number, because 544991 - 2⁶ = 544927 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 544991.

It is not an unprimeable number, because it can be changed into a prime (544961) 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, 1325 + ... + 1686.

It is an arithmetic number, because the mean of its divisors is an integer number (137046).

2⁵⁴⁴⁹⁹¹ is an apocalyptic number.

544991 is a deficient number, since it is larger than the sum of its proper divisors (3193).

544991 is a wasteful number, since it uses less digits than its factorization.

544991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192.

The product of its digits is 6480, while the sum is 32.

The square root of 544991 is about 738.2350574174. The cubic root of 544991 is about 81.6826420689.

The spelling of 544991 in words is "five hundred forty-four thousand, nine hundred ninety-one".