2506308121 has 2 divisors, whose sum is σ = 2506308122. Its totient is φ = 2506308120.

The previous prime is 2506308073. The next prime is 2506308127. The reversal of 2506308121 is 1218036052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2463732496 + 42575625 = 49636^2 + 6525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506308121 - 2¹⁵ = 2506275353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2506308121.

It is not a weakly prime, because it can be changed into another prime (2506308127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253154060 + 1253154061.

It is an arithmetic number, because the mean of its divisors is an integer number (1253154061).

Almost surely, 2^2506308121 is an apocalyptic number.

It is an amenable number.

2506308121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506308121 is an equidigital number, since it uses as much as digits as its factorization.

2506308121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2506308121 is about 50063.0414677335. The cubic root of 2506308121 is about 1358.3493745087.

The spelling of 2506308121 in words is "two billion, five hundred six million, three hundred eight thousand, one hundred twenty-one".