2539211797 has 2 divisors, whose sum is σ = 2539211798. Its totient is φ = 2539211796.

The previous prime is 2539211747. The next prime is 2539211819. The reversal of 2539211797 is 7971129352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2160948196 + 378263601 = 46486^2 + 19449^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539211797 - 2¹⁵ = 2539179029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539211747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269605898 + 1269605899.

It is an arithmetic number, because the mean of its divisors is an integer number (1269605899).

Almost surely, 2^2539211797 is an apocalyptic number.

It is an amenable number.

2539211797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539211797 is an equidigital number, since it uses as much as digits as its factorization.

2539211797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 2539211797 is about 50390.5923461910. The cubic root of 2539211797 is about 1364.2678424503.

The spelling of 2539211797 in words is "two billion, five hundred thirty-nine million, two hundred eleven thousand, seven hundred ninety-seven".