4509161 has 2 divisors, whose sum is σ = 4509162. Its totient is φ = 4509160.

The previous prime is 4509149. The next prime is 4509163. The reversal of 4509161 is 1619054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2421136 + 2088025 = 1556^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 4509161 - 2¹⁸ = 4247017 is a prime.

Together with 4509163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4509161.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4509163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2254580 + 2254581.

It is an arithmetic number, because the mean of its divisors is an integer number (2254581).

Almost surely, 2^4509161 is an apocalyptic number.

It is an amenable number.

4509161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4509161 is an equidigital number, since it uses as much as digits as its factorization.

4509161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 4509161 is about 2123.4785141367. The cubic root of 4509161 is about 165.2083196743.

The spelling of 4509161 in words is "four million, five hundred nine thousand, one hundred sixty-one".