11513945 has 8 divisors (see below), whose sum is σ = 13836744. Its totient is φ = 9197824.

The previous prime is 11513939. The next prime is 11513951. The reversal of 11513945 is 54931511.

It is an interprime number because it is at equal distance from previous prime (11513939) and next prime (11513951).

It can be written as a sum of positive squares in 4 ways, for example, as 1860496 + 9653449 = 1364^2 + 3107^2 .

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 11513945 - 2⁶ = 11513881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3707 + ... + 6063.

It is an arithmetic number, because the mean of its divisors is an integer number (1729593).

Almost surely, 2^11513945 is an apocalyptic number.

It is an amenable number.

11513945 is a deficient number, since it is larger than the sum of its proper divisors (2322799).

11513945 is an equidigital number, since it uses as much as digits as its factorization.

11513945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339.

The product of its digits is 2700, while the sum is 29.

The square root of 11513945 is about 3393.2204467143. The cubic root of 11513945 is about 225.8090707388.

The spelling of 11513945 in words is "eleven million, five hundred thirteen thousand, nine hundred forty-five".