2521917029 has 2 divisors, whose sum is σ = 2521917030. Its totient is φ = 2521917028.

The previous prime is 2521917017. The next prime is 2521917061. The reversal of 2521917029 is 9207191252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2493004900 + 28912129 = 49930^2 + 5377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2521917029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2521916983 and 2521917001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521917829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260958514 + 1260958515.

It is an arithmetic number, because the mean of its divisors is an integer number (1260958515).

Almost surely, 2^2521917029 is an apocalyptic number.

It is an amenable number.

2521917029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521917029 is an equidigital number, since it uses as much as digits as its factorization.

2521917029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 2521917029 is about 50218.6920279690. The cubic root of 2521917029 is about 1361.1634056181.

The spelling of 2521917029 in words is "two billion, five hundred twenty-one million, nine hundred seventeen thousand, twenty-nine".