544400553 has 4 divisors (see below), whose sum is σ = 725867408. Its totient is φ = 362933700.

The previous prime is 544400543. The next prime is 544400617. The reversal of 544400553 is 355004445.

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 not a de Polignac number, because 544400553 - 2²⁵ = 510846121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 544400553.

It is not an unprimeable number, because it can be changed into a prime (544400513) 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, 90733423 + ... + 90733428.

It is an arithmetic number, because the mean of its divisors is an integer number (181466852).

Almost surely, 2^544400553 is an apocalyptic number.

It is an amenable number.

544400553 is a deficient number, since it is larger than the sum of its proper divisors (181466855).

544400553 is a wasteful number, since it uses less digits than its factorization.

544400553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181466854.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 544400553 is about 23332.3927834245. The cubic root of 544400553 is about 816.5313289730.

Adding to 544400553 its reverse (355004445), we get a palindrome (899404998).

The spelling of 544400553 in words is "five hundred forty-four million, four hundred thousand, five hundred fifty-three".