5205102191 has 2 divisors, whose sum is σ = 5205102192. Its totient is φ = 5205102190.

The previous prime is 5205102187. The next prime is 5205102247. The reversal of 5205102191 is 1912015025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5205102191 - 2² = 5205102187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5205102191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5205102131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602551095 + 2602551096.

It is an arithmetic number, because the mean of its divisors is an integer number (2602551096).

Almost surely, 2^5205102191 is an apocalyptic number.

5205102191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205102191 is an equidigital number, since it uses as much as digits as its factorization.

5205102191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 5205102191 is about 72146.3941649200. The cubic root of 5205102191 is about 1733.0446558903.

The spelling of 5205102191 in words is "five billion, two hundred five million, one hundred two thousand, one hundred ninety-one".