11845513 has 4 divisors (see below), whose sum is σ = 12165700. Its totient is φ = 11525328.

The previous prime is 11845507. The next prime is 11845517. The reversal of 11845513 is 31554811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5555449 + 6290064 = 2357^2 + 2508^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845513 - 2¹⁷ = 11714441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11845517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160038 + ... + 160111.

It is an arithmetic number, because the mean of its divisors is an integer number (3041425).

Almost surely, 2^11845513 is an apocalyptic number.

It is an amenable number.

11845513 is a deficient number, since it is larger than the sum of its proper divisors (320187).

11845513 is an equidigital number, since it uses as much as digits as its factorization.

11845513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320186.

The product of its digits is 2400, while the sum is 28.

The square root of 11845513 is about 3441.7311051272. The cubic root of 11845513 is about 227.9561383257.

The spelling of 11845513 in words is "eleven million, eight hundred forty-five thousand, five hundred thirteen".