1003545 has 24 divisors (see below), whose sum is σ = 1801800. Its totient is φ = 516096.

The previous prime is 1003543. The next prime is 1003549. The reversal of 1003545 is 5453001.

It can be written as a sum of positive squares in 4 ways, for example, as 76176 + 927369 = 276^2 + 963^2 .

It is not a de Polignac number, because 1003545 - 2¹ = 1003543 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 921 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (75075).

2^1003545 is an apocalyptic number.

1003545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1003545 is a deficient number, since it is larger than the sum of its proper divisors (798255).

1003545 is a wasteful number, since it uses less digits than its factorization.

1003545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1003545 is about 1001.7709319001. The cubic root of 1003545 is about 100.1180273074.

Adding to 1003545 its reverse (5453001), we get a palindrome (6456546).

The spelling of 1003545 in words is "one million, three thousand, five hundred forty-five".