4531609 has 2 divisors, whose sum is σ = 4531610. Its totient is φ = 4531608.

The previous prime is 4531603. The next prime is 4531619. The reversal of 4531609 is 9061354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 205209 = 2080^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 4531609 - 2⁹ = 4531097 is a prime.

It is not a weakly prime, because it can be changed into another prime (4531603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2265804 + 2265805.

It is an arithmetic number, because the mean of its divisors is an integer number (2265805).

Almost surely, 2^4531609 is an apocalyptic number.

It is an amenable number.

4531609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4531609 is an equidigital number, since it uses as much as digits as its factorization.

4531609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 4531609 is about 2128.7576188942. The cubic root of 4531609 is about 165.4820187168.

The spelling of 4531609 in words is "four million, five hundred thirty-one thousand, six hundred nine".