5144655121 has 4 divisors (see below), whose sum is σ = 5283699892. Its totient is φ = 5005610352.

The previous prime is 5144655119. The next prime is 5144655161. The reversal of 5144655121 is 1215564415.

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 2317074496 + 2827580625 = 48136^2 + 53175^2 .

It is a cyclic number.

It is not a de Polignac number, because 5144655121 - 2¹ = 5144655119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5144655161) 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, 69522330 + ... + 69522403.

It is an arithmetic number, because the mean of its divisors is an integer number (1320924973).

Almost surely, 2^5144655121 is an apocalyptic number.

It is an amenable number.

5144655121 is a deficient number, since it is larger than the sum of its proper divisors (139044771).

5144655121 is a wasteful number, since it uses less digits than its factorization.

5144655121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139044770.

The product of its digits is 24000, while the sum is 34.

The square root of 5144655121 is about 71726.2512682769. The cubic root of 5144655121 is about 1726.3098777112.

The spelling of 5144655121 in words is "five billion, one hundred forty-four million, six hundred fifty-five thousand, one hundred twenty-one".