2057307757 has 4 divisors (see below), whose sum is σ = 2092177440. Its totient is φ = 2022438076.

The previous prime is 2057307739. The next prime is 2057307761. The reversal of 2057307757 is 7577037502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2057307757 - 2²³ = 2048919149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057307787) 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, 17434753 + ... + 17434870.

It is an arithmetic number, because the mean of its divisors is an integer number (523044360).

Almost surely, 2^2057307757 is an apocalyptic number.

It is an amenable number.

2057307757 is a deficient number, since it is larger than the sum of its proper divisors (34869683).

2057307757 is an equidigital number, since it uses as much as digits as its factorization.

2057307757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34869682.

The product of its (nonzero) digits is 360150, while the sum is 43.

The square root of 2057307757 is about 45357.5545747343. The cubic root of 2057307757 is about 1271.8417811872.

The spelling of 2057307757 in words is "two billion, fifty-seven million, three hundred seven thousand, seven hundred fifty-seven".