2008851521 has 2 divisors, whose sum is σ = 2008851522. Its totient is φ = 2008851520.

The previous prime is 2008851503. The next prime is 2008851541. The reversal of 2008851521 is 1251588002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1930723600 + 78127921 = 43940^2 + 8839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2008851521 - 2¹⁰ = 2008850497 is a prime.

It is not a weakly prime, because it can be changed into another prime (2008851541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004425760 + 1004425761.

It is an arithmetic number, because the mean of its divisors is an integer number (1004425761).

Almost surely, 2^2008851521 is an apocalyptic number.

It is an amenable number.

2008851521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2008851521 is an equidigital number, since it uses as much as digits as its factorization.

2008851521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 2008851521 is about 44820.2133082831. The cubic root of 2008851521 is about 1261.7770174977. Note that the first 3 decimals are identical.

The spelling of 2008851521 in words is "two billion, eight million, eight hundred fifty-one thousand, five hundred twenty-one".