2757357457 has 4 divisors (see below), whose sum is σ = 2757783780. Its totient is φ = 2756931136.

The previous prime is 2757357451. The next prime is 2757357479. The reversal of 2757357457 is 7547537572.

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 1281568401 + 1475789056 = 35799^2 + 38416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2757357457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2757357451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203308 + ... + 216445.

It is an arithmetic number, because the mean of its divisors is an integer number (689445945).

Almost surely, 2^2757357457 is an apocalyptic number.

It is an amenable number.

2757357457 is a deficient number, since it is larger than the sum of its proper divisors (426323).

2757357457 is an equidigital number, since it uses as much as digits as its factorization.

2757357457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426322.

The product of its digits is 7203000, while the sum is 52.

The square root of 2757357457 is about 52510.5461502735. The cubic root of 2757357457 is about 1402.2680002158.

The spelling of 2757357457 in words is "two billion, seven hundred fifty-seven million, three hundred fifty-seven thousand, four hundred fifty-seven".