11520003 has 16 divisors (see below), whose sum is σ = 17298432. Its totient is φ = 6756000.

The previous prime is 11519983. The next prime is 11520013. The reversal of 11520003 is 30002511.

It is not a de Polignac number, because 11520003 - 2⁵ = 11519971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11520013) 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 15 ways as a sum of consecutive naturals, for example, 4608 + ... + 6653.

It is an arithmetic number, because the mean of its divisors is an integer number (1081152).

Almost surely, 2^11520003 is an apocalyptic number.

11520003 is a deficient number, since it is larger than the sum of its proper divisors (5778429).

11520003 is a wasteful number, since it uses less digits than its factorization.

11520003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 11520003 is about 3394.1129916371. The cubic root of 11520003 is about 225.8486665364.

Adding to 11520003 its reverse (30002511), we get a palindrome (41522514).

The spelling of 11520003 in words is "eleven million, five hundred twenty thousand, three".