2057502509 has 2 divisors, whose sum is σ = 2057502510. Its totient is φ = 2057502508.

The previous prime is 2057502497. The next prime is 2057502547. The reversal of 2057502509 is 9052057502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1788444100 + 269058409 = 42290^2 + 16403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057502509 - 2⁴ = 2057502493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2057502709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028751254 + 1028751255.

It is an arithmetic number, because the mean of its divisors is an integer number (1028751255).

Almost surely, 2^2057502509 is an apocalyptic number.

It is an amenable number.

2057502509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057502509 is an equidigital number, since it uses as much as digits as its factorization.

2057502509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 2057502509 is about 45359.7013768830. The cubic root of 2057502509 is about 1271.8819122621.

The spelling of 2057502509 in words is "two billion, fifty-seven million, five hundred two thousand, five hundred nine".