544405 has 4 divisors (see below), whose sum is σ = 653292. Its totient is φ = 435520.

The previous prime is 544403. The next prime is 544429. The reversal of 544405 is 504445.

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 288369 + 256036 = 537^2 + 506^2 .

It is not a de Polignac number, because 544405 - 2¹ = 544403 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 (544403) 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, 54436 + ... + 54445.

It is an arithmetic number, because the mean of its divisors is an integer number (163323).

2⁵⁴⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

544405 is a deficient number, since it is larger than the sum of its proper divisors (108887).

544405 is a wasteful number, since it uses less digits than its factorization.

544405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108886.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 544405 is about 737.8380581130. The cubic root of 544405 is about 81.6533552278.

It can be divided in two parts, 54440 and 5, that added together give a palindrome (54445).

The spelling of 544405 in words is "five hundred forty-four thousand, four hundred five".