1530409 has 2 divisors, whose sum is σ = 1530410. Its totient is φ = 1530408.

The previous prime is 1530349. The next prime is 1530457. The reversal of 1530409 is 9040351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 5184 = 1235^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530409 - 2⁷ = 1530281 is a prime.

It is a Chen prime.

1530409 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1530409.

It is not a weakly prime, because it can be changed into another prime (1530709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765204 + 765205.

It is an arithmetic number, because the mean of its divisors is an integer number (765205).

2^1530409 is an apocalyptic number.

It is an amenable number.

1530409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530409 is an equidigital number, since it uses as much as digits as its factorization.

1530409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1530409 is about 1237.0970050889. The cubic root of 1530409 is about 115.2398020662.

The spelling of 1530409 in words is "one million, five hundred thirty thousand, four hundred nine".