5141565721 has 2 divisors, whose sum is σ = 5141565722. Its totient is φ = 5141565720.

The previous prime is 5141565647. The next prime is 5141565727. The reversal of 5141565721 is 1275651415.

5141565721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5137305625 + 4260096 = 71675^2 + 2064^2 .

It is a cyclic number.

It is not a de Polignac number, because 5141565721 - 2²⁵ = 5108011289 is a prime.

It is not a weakly prime, because it can be changed into another prime (5141565727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2570782860 + 2570782861.

It is an arithmetic number, because the mean of its divisors is an integer number (2570782861).

Almost surely, 2^5141565721 is an apocalyptic number.

It is an amenable number.

5141565721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5141565721 is an equidigital number, since it uses as much as digits as its factorization.

5141565721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 37.

The square root of 5141565721 is about 71704.7119860334. The cubic root of 5141565721 is about 1725.9642549551.

The spelling of 5141565721 in words is "five billion, one hundred forty-one million, five hundred sixty-five thousand, seven hundred twenty-one".