11503523 has 2 divisors, whose sum is σ = 11503524. Its totient is φ = 11503522.

The previous prime is 11503507. The next prime is 11503537. The reversal of 11503523 is 32530511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11503523 - 2⁴ = 11503507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11503495 and 11503504.

It is not a weakly prime, because it can be changed into another prime (11503553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5751761 + 5751762.

It is an arithmetic number, because the mean of its divisors is an integer number (5751762).

Almost surely, 2^11503523 is an apocalyptic number.

11503523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11503523 is an equidigital number, since it uses as much as digits as its factorization.

11503523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 11503523 is about 3391.6843897981. The cubic root of 11503523 is about 225.7409188135.

The spelling of 11503523 in words is "eleven million, five hundred three thousand, five hundred twenty-three".