5433165721 has 2 divisors, whose sum is σ = 5433165722. Its totient is φ = 5433165720.

The previous prime is 5433165701. The next prime is 5433165739. The reversal of 5433165721 is 1275613345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3583219600 + 1849946121 = 59860^2 + 43011^2 .

It is a cyclic number.

It is not a de Polignac number, because 5433165721 - 2¹⁵ = 5433132953 is a prime.

It is not a weakly prime, because it can be changed into another prime (5433165701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2716582860 + 2716582861.

It is an arithmetic number, because the mean of its divisors is an integer number (2716582861).

Almost surely, 2^5433165721 is an apocalyptic number.

It is an amenable number.

5433165721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5433165721 is an equidigital number, since it uses as much as digits as its factorization.

5433165721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 5433165721 is about 73710.0109957935. The cubic root of 5433165721 is about 1757.9950611896.

The spelling of 5433165721 in words is "five billion, four hundred thirty-three million, one hundred sixty-five thousand, seven hundred twenty-one".