11956523 has 2 divisors, whose sum is σ = 11956524. Its totient is φ = 11956522.

The previous prime is 11956519. The next prime is 11956531. The reversal of 11956523 is 32565911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11956523 - 2² = 11956519 is a prime.

It is equal to p₇₈₅₄₀₈ and since 11956523 and 785408 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11956523.

It is not a weakly prime, because it can be changed into another prime (11956583) 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, 5978261 + 5978262.

It is an arithmetic number, because the mean of its divisors is an integer number (5978262).

Almost surely, 2^11956523 is an apocalyptic number.

11956523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11956523 is an equidigital number, since it uses as much as digits as its factorization.

11956523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 11956523 is about 3457.8205563621. The cubic root of 11956523 is about 228.6660209116. Note that the first 3 decimals are identical.

The spelling of 11956523 in words is "eleven million, nine hundred fifty-six thousand, five hundred twenty-three".