2745996257 has 4 divisors (see below), whose sum is σ = 2748807876. Its totient is φ = 2743184640.

The previous prime is 2745996241. The next prime is 2745996259. The reversal of 2745996257 is 7526995472.

2745996257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2583790561 + 162205696 = 50831^2 + 12736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745996257 - 2⁴ = 2745996241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2745996259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404344 + ... + 1406297.

It is an arithmetic number, because the mean of its divisors is an integer number (687201969).

Almost surely, 2^2745996257 is an apocalyptic number.

It is an amenable number.

2745996257 is a deficient number, since it is larger than the sum of its proper divisors (2811619).

2745996257 is an equidigital number, since it uses as much as digits as its factorization.

2745996257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811618.

The product of its digits is 9525600, while the sum is 56.

The square root of 2745996257 is about 52402.2543121954. The cubic root of 2745996257 is about 1400.3394171946.

The spelling of 2745996257 in words is "two billion, seven hundred forty-five million, nine hundred ninety-six thousand, two hundred fifty-seven".