1530009 has 20 divisors (see below), whose sum is σ = 2463076. Its totient is φ = 940896.

The previous prime is 1529989. The next prime is 1530019. The reversal of 1530009 is 9000351.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 585225 = 972^2 + 765^2 .

It is not a de Polignac number, because 1530009 - 2⁵ = 1529977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1529973 and 1530000.

It is not an unprimeable number, because it can be changed into a prime (1530019) 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 in 19 ways as a sum of consecutive naturals, for example, 327 + ... + 1779.

2^1530009 is an apocalyptic number.

It is an amenable number.

1530009 is a deficient number, since it is larger than the sum of its proper divisors (933067).

1530009 is a wasteful number, since it uses less digits than its factorization.

1530009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 1530009 is about 1236.9353257143. The cubic root of 1530009 is about 115.2297611909.

The spelling of 1530009 in words is "one million, five hundred thirty thousand, nine".