2745081457 has 2 divisors, whose sum is σ = 2745081458. Its totient is φ = 2745081456.

The previous prime is 2745081431. The next prime is 2745081491. The reversal of 2745081457 is 7541805472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2744083456 + 998001 = 52384^2 + 999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745081457 - 2²⁷ = 2610863729 is a prime.

It is not a weakly prime, because it can be changed into another prime (2745081407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372540728 + 1372540729.

It is an arithmetic number, because the mean of its divisors is an integer number (1372540729).

Almost surely, 2^2745081457 is an apocalyptic number.

It is an amenable number.

2745081457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745081457 is an equidigital number, since it uses as much as digits as its factorization.

2745081457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 43.

The square root of 2745081457 is about 52393.5249529940. The cubic root of 2745081457 is about 1400.1838971016.

The spelling of 2745081457 in words is "two billion, seven hundred forty-five million, eighty-one thousand, four hundred fifty-seven".