2305757057 has 4 divisors (see below), whose sum is σ = 2361995076. Its totient is φ = 2249519040.

The previous prime is 2305757053. The next prime is 2305757059. The reversal of 2305757057 is 7507575032.

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 1339852816 + 965904241 = 36604^2 + 31079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305757057 - 2² = 2305757053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 56237977 = 2305757057 / (2 + 3 + 0 + 5 + 7 + 5 + 7 + 0 + 5 + 7).

It is not an unprimeable number, because it can be changed into a prime (2305757053) 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, 28118948 + ... + 28119029.

It is an arithmetic number, because the mean of its divisors is an integer number (590498769).

Almost surely, 2^2305757057 is an apocalyptic number.

It is an amenable number.

2305757057 is a deficient number, since it is larger than the sum of its proper divisors (56238019).

2305757057 is an equidigital number, since it uses as much as digits as its factorization.

2305757057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56238018.

The product of its (nonzero) digits is 257250, while the sum is 41.

The square root of 2305757057 is about 48018.2991889550. The cubic root of 2305757057 is about 1321.1065592918.

The spelling of 2305757057 in words is "two billion, three hundred five million, seven hundred fifty-seven thousand, fifty-seven".