5133331421 has 2 divisors, whose sum is σ = 5133331422. Its totient is φ = 5133331420.

The previous prime is 5133331397. The next prime is 5133331439. The reversal of 5133331421 is 1241333315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4842628921 + 290702500 = 69589^2 + 17050^2 .

It is a cyclic number.

It is not a de Polignac number, because 5133331421 - 2¹⁴ = 5133315037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5133331451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2566665710 + 2566665711.

It is an arithmetic number, because the mean of its divisors is an integer number (2566665711).

Almost surely, 2^5133331421 is an apocalyptic number.

It is an amenable number.

5133331421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5133331421 is an equidigital number, since it uses as much as digits as its factorization.

5133331421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 5133331421 is about 71647.2708552112. The cubic root of 5133331421 is about 1725.0423761627.

Adding to 5133331421 its reverse (1241333315), we get a palindrome (6374664736).

The spelling of 5133331421 in words is "five billion, one hundred thirty-three million, three hundred thirty-one thousand, four hundred twenty-one".