11532003 has 20 divisors (see below), whose sum is σ = 17948808. Its totient is φ = 6585600.

The previous prime is 11531987. The next prime is 11532011. The reversal of 11532003 is 30023511.

It is a happy number.

11532003 is a nontrivial binomial coefficient, being equal to C(4803, 2).

It is not a de Polignac number, because 11532003 - 2⁴ = 11531987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11532013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6403 + ... + 8003.

Almost surely, 2^11532003 is an apocalyptic number.

11532003 is the 4802-nd triangular number.

11532003 is a deficient number, since it is larger than the sum of its proper divisors (6416805).

11532003 is an frugal number, since it uses more digits than its factorization.

11532003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 11532003 is about 3395.8802982437. The cubic root of 11532003 is about 225.9270589785.

Adding to 11532003 its reverse (30023511), we get a palindrome (41555514).

It can be divided in two parts, 1153200 and 3, that multiplied together give a square (3459600 = 1860²).

The spelling of 11532003 in words is "eleven million, five hundred thirty-two thousand, three".