5213440161 has 6 divisors (see below), whose sum is σ = 7530524690. Its totient is φ = 3475626768.

The previous prime is 5213440151. The next prime is 5213440181. The reversal of 5213440161 is 1610443125.

It is a happy number.

5213440161 is a `hidden beast` number, since 5 + 213 + 440 + 1 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4925934225 + 287505936 = 70185^2 + 16956^2 .

It is not a de Polignac number, because 5213440161 - 2⁷ = 5213440033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5213440151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 289635556 + ... + 289635573.

Almost surely, 2^5213440161 is an apocalyptic number.

It is an amenable number.

5213440161 is a deficient number, since it is larger than the sum of its proper divisors (2317084529).

5213440161 is a wasteful number, since it uses less digits than its factorization.

5213440161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579271135 (or 579271132 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 5213440161 is about 72204.1561199908. The cubic root of 5213440161 is about 1733.9695410573.

Adding to 5213440161 its reverse (1610443125), we get a palindrome (6823883286).

The spelling of 5213440161 in words is "five billion, two hundred thirteen million, four hundred forty thousand, one hundred sixty-one".