2508487021 has 2 divisors, whose sum is σ = 2508487022. Its totient is φ = 2508487020.

The previous prime is 2508486971. The next prime is 2508487049. The reversal of 2508487021 is 1207848052.

2508487021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946133225 + 562353796 = 44115^2 + 23714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2508487021 - 2⁹ = 2508486509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2508487081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254243510 + 1254243511.

It is an arithmetic number, because the mean of its divisors is an integer number (1254243511).

Almost surely, 2^2508487021 is an apocalyptic number.

It is an amenable number.

2508487021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2508487021 is an equidigital number, since it uses as much as digits as its factorization.

2508487021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 2508487021 is about 50084.7983024790. The cubic root of 2508487021 is about 1358.7428949158.

The spelling of 2508487021 in words is "two billion, five hundred eight million, four hundred eighty-seven thousand, twenty-one".