5311551209 has 2 divisors, whose sum is σ = 5311551210. Its totient is φ = 5311551208.

The previous prime is 5311551199. The next prime is 5311551227. The reversal of 5311551209 is 9021551135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3624642025 + 1686909184 = 60205^2 + 41072^2 .

It is a cyclic number.

It is not a de Polignac number, because 5311551209 - 2⁸ = 5311550953 is a prime.

It is not a weakly prime, because it can be changed into another prime (5311551409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2655775604 + 2655775605.

It is an arithmetic number, because the mean of its divisors is an integer number (2655775605).

Almost surely, 2^5311551209 is an apocalyptic number.

It is an amenable number.

5311551209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5311551209 is an equidigital number, since it uses as much as digits as its factorization.

5311551209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 5311551209 is about 72880.3897423717. The cubic root of 5311551209 is about 1744.7791291946.

The spelling of 5311551209 in words is "five billion, three hundred eleven million, five hundred fifty-one thousand, two hundred nine".