5121941081 has 2 divisors, whose sum is σ = 5121941082. Its totient is φ = 5121941080.

The previous prime is 5121941051. The next prime is 5121941141. The reversal of 5121941081 is 1801491215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5095675456 + 26265625 = 71384^2 + 5125^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121941081 - 2³⁰ = 4048199257 is a prime.

It is a super-2 number, since 2×5121941081² = 52468560874470897122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5121941021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560970540 + 2560970541.

It is an arithmetic number, because the mean of its divisors is an integer number (2560970541).

Almost surely, 2^5121941081 is an apocalyptic number.

It is an amenable number.

5121941081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121941081 is an equidigital number, since it uses as much as digits as its factorization.

5121941081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 5121941081 is about 71567.7377105075. The cubic root of 5121941081 is about 1723.7655334772.

The spelling of 5121941081 in words is "five billion, one hundred twenty-one million, nine hundred forty-one thousand, eighty-one".