544520213 has 4 divisors (see below), whose sum is σ = 551979468. Its totient is φ = 537060960.

The previous prime is 544520209. The next prime is 544520243. The reversal of 544520213 is 312025445.

It is a happy number.

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 219691684 + 324828529 = 14822^2 + 18023^2 .

It is a cyclic number.

It is not a de Polignac number, because 544520213 - 2² = 544520209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544520243) 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, 3729518 + ... + 3729663.

It is an arithmetic number, because the mean of its divisors is an integer number (137994867).

Almost surely, 2^544520213 is an apocalyptic number.

It is an amenable number.

544520213 is a deficient number, since it is larger than the sum of its proper divisors (7459255).

544520213 is an equidigital number, since it uses as much as digits as its factorization.

544520213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7459254.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 544520213 is about 23334.9568887538. The cubic root of 544520213 is about 816.5911494982.

Adding to 544520213 its reverse (312025445), we get a palindrome (856545658).

The spelling of 544520213 in words is "five hundred forty-four million, five hundred twenty thousand, two hundred thirteen".