11506513 has 8 divisors (see below), whose sum is σ = 11740608. Its totient is φ = 11274384.

The previous prime is 11506511. The next prime is 11506531. The reversal of 11506513 is 31560511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11506513 - 2¹ = 11506511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11506511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17295 + ... + 17947.

It is an arithmetic number, because the mean of its divisors is an integer number (1467576).

Almost surely, 2^11506513 is an apocalyptic number.

It is an amenable number.

11506513 is a deficient number, since it is larger than the sum of its proper divisors (234095).

11506513 is an equidigital number, since it uses as much as digits as its factorization.

11506513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 11506513 is about 3392.1251450971. The cubic root of 11506513 is about 225.7604753406.

The spelling of 11506513 in words is "eleven million, five hundred six thousand, five hundred thirteen".