2520102509 has 2 divisors, whose sum is σ = 2520102510. Its totient is φ = 2520102508.

The previous prime is 2520102469. The next prime is 2520102527. The reversal of 2520102509 is 9052010252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2500300009 + 19802500 = 50003^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520102509 - 2²⁸ = 2251667053 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 (2520101509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260051254 + 1260051255.

It is an arithmetic number, because the mean of its divisors is an integer number (1260051255).

Almost surely, 2^2520102509 is an apocalyptic number.

It is an amenable number.

2520102509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520102509 is an equidigital number, since it uses as much as digits as its factorization.

2520102509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2520102509 is about 50200.6225957408. The cubic root of 2520102509 is about 1360.8368748103.

The spelling of 2520102509 in words is "two billion, five hundred twenty million, one hundred two thousand, five hundred nine".