11520505 has 8 divisors (see below), whose sum is σ = 14198472. Its totient is φ = 8967168.

The previous prime is 11520473. The next prime is 11520559. The reversal of 11520505 is 50502511.

It can be written as a sum of positive squares in 4 ways, for example, as 2424249 + 9096256 = 1557^2 + 3016^2 .

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 11520505 - 2⁵ = 11520473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30952 + ... + 31321.

It is an arithmetic number, because the mean of its divisors is an integer number (1774809).

Almost surely, 2^11520505 is an apocalyptic number.

It is an amenable number.

11520505 is a deficient number, since it is larger than the sum of its proper divisors (2677967).

11520505 is an equidigital number, since it uses as much as digits as its factorization.

11520505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62315.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 11520505 is about 3394.1869424061. The cubic root of 11520505 is about 225.8519470443.

The spelling of 11520505 in words is "eleven million, five hundred twenty thousand, five hundred five".