5161004221 has 2 divisors, whose sum is σ = 5161004222. Its totient is φ = 5161004220.

The previous prime is 5161004183. The next prime is 5161004243. The reversal of 5161004221 is 1224001615.

It is an a-pointer prime, because the next prime (5161004243) can be obtained adding 5161004221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5039012196 + 121992025 = 70986^2 + 11045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5161004221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5161004192 and 5161004201.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580502110 + 2580502111.

It is an arithmetic number, because the mean of its divisors is an integer number (2580502111).

Almost surely, 2^5161004221 is an apocalyptic number.

It is an amenable number.

5161004221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161004221 is an equidigital number, since it uses as much as digits as its factorization.

5161004221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 5161004221 is about 71840.1296003842. The cubic root of 5161004221 is about 1728.1366129499.

Adding to 5161004221 its reverse (1224001615), we get a palindrome (6385005836).

The spelling of 5161004221 in words is "five billion, one hundred sixty-one million, four thousand, two hundred twenty-one".