2150552081 has 2 divisors, whose sum is σ = 2150552082. Its totient is φ = 2150552080.

The previous prime is 2150552059. The next prime is 2150552093. The reversal of 2150552081 is 1802550512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287661456 + 862890625 = 35884^2 + 29375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150552081 - 2⁶ = 2150552017 is a prime.

It is a super-2 number, since 2×2150552081² = 9249748506186861122, which contains 22 as substring.

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 (2150552051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075276040 + 1075276041.

It is an arithmetic number, because the mean of its divisors is an integer number (1075276041).

Almost surely, 2^2150552081 is an apocalyptic number.

It is an amenable number.

2150552081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150552081 is an equidigital number, since it uses as much as digits as its factorization.

2150552081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 2150552081 is about 46374.0453378827. The cubic root of 2150552081 is about 1290.7733441581.

The spelling of 2150552081 in words is "two billion, one hundred fifty million, five hundred fifty-two thousand, eighty-one".