11945503 has 2 divisors, whose sum is σ = 11945504. Its totient is φ = 11945502.

The previous prime is 11945467. The next prime is 11945513. The reversal of 11945503 is 30554911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11945503 - 2⁹ = 11944991 is a prime.

It is equal to p₇₈₄₇₁₁ and since 11945503 and 784711 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11945513) 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, 5972751 + 5972752.

It is an arithmetic number, because the mean of its divisors is an integer number (5972752).

Almost surely, 2^11945503 is an apocalyptic number.

11945503 is a deficient number, since it is larger than the sum of its proper divisors (1).

11945503 is an equidigital number, since it uses as much as digits as its factorization.

11945503 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11945503 is about 3456.2266997406. The cubic root of 11945503 is about 228.5957475799.

The spelling of 11945503 in words is "eleven million, nine hundred forty-five thousand, five hundred three".