2150009 has 2 divisors, whose sum is σ = 2150010. Its totient is φ = 2150008.

The previous prime is 2149993. The next prime is 2150011. The reversal of 2150009 is 9000512.

2150009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 394384 = 1325^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150009 - 2⁴ = 2149993 is a prime.

Together with 2150011, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2150039) 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, 1075004 + 1075005.

It is an arithmetic number, because the mean of its divisors is an integer number (1075005).

2^2150009 is an apocalyptic number.

It is an amenable number.

2150009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150009 is an equidigital number, since it uses as much as digits as its factorization.

2150009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 2150009 is about 1466.2908988328. The cubic root of 2150009 is about 129.0664681596.

The spelling of 2150009 in words is "two million, one hundred fifty thousand, nine".