5144200021 has 4 divisors (see below), whose sum is σ = 5283232492. Its totient is φ = 5005167552.

The previous prime is 5144200007. The next prime is 5144200027. The reversal of 5144200021 is 1200024415.

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 3216024100 + 1928175921 = 56710^2 + 43911^2 .

It is a cyclic number.

It is not a de Polignac number, because 5144200021 - 2⁹ = 5144199509 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 (5144200027) 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, 69516180 + ... + 69516253.

It is an arithmetic number, because the mean of its divisors is an integer number (1320808123).

Almost surely, 2^5144200021 is an apocalyptic number.

It is an amenable number.

5144200021 is a deficient number, since it is larger than the sum of its proper divisors (139032471).

5144200021 is a wasteful number, since it uses less digits than its factorization.

5144200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139032470.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 5144200021 is about 71723.0787194749. The cubic root of 5144200021 is about 1726.2589726603.

Adding to 5144200021 its reverse (1200024415), we get a palindrome (6344224436).

The spelling of 5144200021 in words is "five billion, one hundred forty-four million, two hundred thousand, twenty-one".