2007996521 has 2 divisors, whose sum is σ = 2007996522. Its totient is φ = 2007996520.

The previous prime is 2007996517. The next prime is 2007996539. The reversal of 2007996521 is 1256997002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1992283225 + 15713296 = 44635^2 + 3964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2007996521 - 2² = 2007996517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2007996541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003998260 + 1003998261.

It is an arithmetic number, because the mean of its divisors is an integer number (1003998261).

Almost surely, 2^2007996521 is an apocalyptic number.

It is an amenable number.

2007996521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2007996521 is an equidigital number, since it uses as much as digits as its factorization.

2007996521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 2007996521 is about 44810.6741859571. The cubic root of 2007996521 is about 1261.5979811297.

The spelling of 2007996521 in words is "two billion, seven million, nine hundred ninety-six thousand, five hundred twenty-one".