2521941217 has 2 divisors, whose sum is σ = 2521941218. Its totient is φ = 2521941216.

The previous prime is 2521941209. The next prime is 2521941263. The reversal of 2521941217 is 7121491252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2379878656 + 142062561 = 48784^2 + 11919^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521941217 - 2³ = 2521941209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521941287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260970608 + 1260970609.

It is an arithmetic number, because the mean of its divisors is an integer number (1260970609).

Almost surely, 2^2521941217 is an apocalyptic number.

It is an amenable number.

2521941217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521941217 is an equidigital number, since it uses as much as digits as its factorization.

2521941217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 2521941217 is about 50218.9328540542. The cubic root of 2521941217 is about 1361.1677572965.

The spelling of 2521941217 in words is "two billion, five hundred twenty-one million, nine hundred forty-one thousand, two hundred seventeen".