11885513 has 2 divisors, whose sum is σ = 11885514. Its totient is φ = 11885512.

The previous prime is 11885459. The next prime is 11885521. The reversal of 11885513 is 31558811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8543929 + 3341584 = 2923^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 11885513 - 2¹⁰ = 11884489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11885513.

It is not a weakly prime, because it can be changed into another prime (11885543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5942756 + 5942757.

It is an arithmetic number, because the mean of its divisors is an integer number (5942757).

Almost surely, 2^11885513 is an apocalyptic number.

It is an amenable number.

11885513 is a deficient number, since it is larger than the sum of its proper divisors (1).

11885513 is an equidigital number, since it uses as much as digits as its factorization.

11885513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 32.

The square root of 11885513 is about 3447.5372369273. The cubic root of 11885513 is about 228.2124379397.

It can be divided in two parts, 1188551 and 3, that multiplied together give a palindrome (3565653).

The spelling of 11885513 in words is "eleven million, eight hundred eighty-five thousand, five hundred thirteen".