2215009 has 2 divisors, whose sum is σ = 2215010. Its totient is φ = 2215008.

The previous prime is 2214997. The next prime is 2215013. The reversal of 2215009 is 9005122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1830609 + 384400 = 1353^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215009 - 2⁵ = 2214977 is a prime.

It is an Ulam number.

2215009 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2215099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107504 + 1107505.

It is an arithmetic number, because the mean of its divisors is an integer number (1107505).

2^2215009 is an apocalyptic number.

It is an amenable number.

2215009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215009 is an equidigital number, since it uses as much as digits as its factorization.

2215009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2215009 is about 1488.2906302198. The cubic root of 2215009 is about 130.3542409419.

The spelling of 2215009 in words is "two million, two hundred fifteen thousand, nine".