3155609 has 2 divisors, whose sum is σ = 3155610. Its totient is φ = 3155608.

The previous prime is 3155599. The next prime is 3155617. The reversal of 3155609 is 9065513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 15625 = 1772^2 + 125^2 .

It is an emirp because it is prime and its reverse (9065513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3155609 - 2²⁰ = 2107033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3155629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577804 + 1577805.

It is an arithmetic number, because the mean of its divisors is an integer number (1577805).

Almost surely, 2^3155609 is an apocalyptic number.

It is an amenable number.

3155609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155609 is an equidigital number, since it uses as much as digits as its factorization.

3155609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 3155609 is about 1776.4033888731. The cubic root of 3155609 is about 146.6766768879.

The spelling of 3155609 in words is "three million, one hundred fifty-five thousand, six hundred nine".