1530003 has 8 divisors (see below), whose sum is σ = 2050048. Its totient is φ = 1014984.

The previous prime is 1529989. The next prime is 1530019. The reversal of 1530003 is 3000351.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1530003 - 2⁵ = 1529971 is a prime.

It is a Duffinian number.

1530003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1530073) 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 7 ways as a sum of consecutive naturals, for example, 475 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (256256).

2^1530003 is an apocalyptic number.

1530003 is a deficient number, since it is larger than the sum of its proper divisors (520045).

1530003 is a wasteful number, since it uses less digits than its factorization.

1530003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 1530003 is about 1236.9329003628. The cubic root of 1530003 is about 115.2296105645.

Adding to 1530003 its reverse (3000351), we get a palindrome (4530354).

The spelling of 1530003 in words is "one million, five hundred thirty thousand, three".