11530513 has 2 divisors, whose sum is σ = 11530514. Its totient is φ = 11530512.

The previous prime is 11530507. The next prime is 11530529. The reversal of 11530513 is 31503511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6185169 + 5345344 = 2487^2 + 2312^2 .

It is a cyclic number.

It is not a de Polignac number, because 11530513 - 2¹³ = 11522321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11530583) 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 as a sum of consecutive naturals, namely, 5765256 + 5765257.

It is an arithmetic number, because the mean of its divisors is an integer number (5765257).

Almost surely, 2^11530513 is an apocalyptic number.

It is an amenable number.

11530513 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530513 is an equidigital number, since it uses as much as digits as its factorization.

11530513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 11530513 is about 3395.6609076879. The cubic root of 11530513 is about 225.9173282082.

It can be divided in two parts, 115 and 30513, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 11530513 in words is "eleven million, five hundred thirty thousand, five hundred thirteen".