5131661333 has 2 divisors, whose sum is σ = 5131661334. Its totient is φ = 5131661332.

The previous prime is 5131661279. The next prime is 5131661351. The reversal of 5131661333 is 3331661315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4507511044 + 624150289 = 67138^2 + 24983^2 .

It is a cyclic number.

It is not a de Polignac number, because 5131661333 - 2¹⁰ = 5131660309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5131661333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5131661383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565830666 + 2565830667.

It is an arithmetic number, because the mean of its divisors is an integer number (2565830667).

Almost surely, 2^5131661333 is an apocalyptic number.

It is an amenable number.

5131661333 is a deficient number, since it is larger than the sum of its proper divisors (1).

5131661333 is an equidigital number, since it uses as much as digits as its factorization.

5131661333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 32.

The square root of 5131661333 is about 71635.6149760718. The cubic root of 5131661333 is about 1724.8552796603.

The spelling of 5131661333 in words is "five billion, one hundred thirty-one million, six hundred sixty-one thousand, three hundred thirty-three".