2765518201 has 2 divisors, whose sum is σ = 2765518202. Its totient is φ = 2765518200.

The previous prime is 2765518199. The next prime is 2765518207. The reversal of 2765518201 is 1028155672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2714410000 + 51108201 = 52100^2 + 7149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2765518201 - 2¹ = 2765518199 is a prime.

Together with 2765518199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2765518207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382759100 + 1382759101.

It is an arithmetic number, because the mean of its divisors is an integer number (1382759101).

Almost surely, 2^2765518201 is an apocalyptic number.

It is an amenable number.

2765518201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765518201 is an equidigital number, since it uses as much as digits as its factorization.

2765518201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 2765518201 is about 52588.1945021884. The cubic root of 2765518201 is about 1403.6500334771.

The spelling of 2765518201 in words is "two billion, seven hundred sixty-five million, five hundred eighteen thousand, two hundred one".