2745041305 has 4 divisors (see below), whose sum is σ = 3294049572. Its totient is φ = 2196033040.

The previous prime is 2745041281. The next prime is 2745041317. The reversal of 2745041305 is 5031405472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1600640064 + 1144401241 = 40008^2 + 33829^2 .

It is not a de Polignac number, because 2745041305 - 2⁷ = 2745041177 is a prime.

It is a super-2 number, since 2×2745041305² = 15070503532312206050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274504126 + ... + 274504135.

It is an arithmetic number, because the mean of its divisors is an integer number (823512393).

Almost surely, 2^2745041305 is an apocalyptic number.

It is an amenable number.

2745041305 is a deficient number, since it is larger than the sum of its proper divisors (549008267).

2745041305 is an equidigital number, since it uses as much as digits as its factorization.

2745041305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549008266.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 2745041305 is about 52393.1417744727. The cubic root of 2745041305 is about 1400.1770702905.

Adding to 2745041305 its reverse (5031405472), we get a palindrome (7776446777).

The spelling of 2745041305 in words is "two billion, seven hundred forty-five million, forty-one thousand, three hundred five".