7055509 has 2 divisors, whose sum is σ = 7055510. Its totient is φ = 7055508.

The previous prime is 7055491. The next prime is 7055513. The reversal of 7055509 is 9055507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6874884 + 180625 = 2622^2 + 425^2 .

It is an emirp because it is prime and its reverse (9055507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7055509 - 2¹³ = 7047317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7055599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3527754 + 3527755.

It is an arithmetic number, because the mean of its divisors is an integer number (3527755).

Almost surely, 2^7055509 is an apocalyptic number.

It is an amenable number.

7055509 is a deficient number, since it is larger than the sum of its proper divisors (1).

7055509 is an equidigital number, since it uses as much as digits as its factorization.

7055509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7875, while the sum is 31.

The square root of 7055509 is about 2656.2208116043. The cubic root of 7055509 is about 191.7974299440.

The spelling of 7055509 in words is "seven million, fifty-five thousand, five hundred nine".