11530945 has 12 divisors (see below), whose sum is σ = 14120316. Its totient is φ = 9039680.

The previous prime is 11530931. The next prime is 11530957. The reversal of 11530945 is 54903511.

It can be written as a sum of positive squares in 6 ways, for example, as 18496 + 11512449 = 136^2 + 3393^2 .

It is not a de Polignac number, because 11530945 - 2⁷ = 11530817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13635 + ... + 14455.

It is an arithmetic number, because the mean of its divisors is an integer number (1176693).

Almost surely, 2^11530945 is an apocalyptic number.

It is an amenable number.

11530945 is a deficient number, since it is larger than the sum of its proper divisors (2589371).

11530945 is an frugal number, since it uses more digits than its factorization.

11530945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 11530945 is about 3395.7245176840. The cubic root of 11530945 is about 225.9201495648.

The spelling of 11530945 in words is "eleven million, five hundred thirty thousand, nine hundred forty-five".