5153644561 has 8 divisors (see below), whose sum is σ = 5559705704. Its totient is φ = 4748958720.

The previous prime is 5153644547. The next prime is 5153644577. The reversal of 5153644561 is 1654463515.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1541033536 + 3612611025 = 39256^2 + 60105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5153644561 - 2¹¹ = 5153642513 is a prime.

It is a super-2 number, since 2×5153644561² = 53120104522249765442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5153644501) 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 7 ways as a sum of consecutive naturals, for example, 336030 + ... + 351031.

It is an arithmetic number, because the mean of its divisors is an integer number (694963213).

Almost surely, 2^5153644561 is an apocalyptic number.

It is an amenable number.

5153644561 is a deficient number, since it is larger than the sum of its proper divisors (406061143).

5153644561 is a wasteful number, since it uses less digits than its factorization.

5153644561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687651.

The product of its digits is 216000, while the sum is 40.

The square root of 5153644561 is about 71788.8888408227. Note that the first 4 decimals coincide. The cubic root of 5153644561 is about 1727.3147736504.

The spelling of 5153644561 in words is "five billion, one hundred fifty-three million, six hundred forty-four thousand, five hundred sixty-one".