2057280509 has 2 divisors, whose sum is σ = 2057280510. Its totient is φ = 2057280508.

The previous prime is 2057280439. The next prime is 2057280529. The reversal of 2057280509 is 9050827502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1235311609 + 821968900 = 35147^2 + 28670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057280509 - 2¹² = 2057276413 is a prime.

It is a super-2 number, since 2×2057280509² = 8464806185422598162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2057280529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028640254 + 1028640255.

It is an arithmetic number, because the mean of its divisors is an integer number (1028640255).

Almost surely, 2^2057280509 is an apocalyptic number.

It is an amenable number.

2057280509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057280509 is an equidigital number, since it uses as much as digits as its factorization.

2057280509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 2057280509 is about 45357.2542048127. The cubic root of 2057280509 is about 1271.8361661955.

The spelling of 2057280509 in words is "two billion, fifty-seven million, two hundred eighty thousand, five hundred nine".