11867501 has 2 divisors, whose sum is σ = 11867502. Its totient is φ = 11867500.

The previous prime is 11867447. The next prime is 11867549. The reversal of 11867501 is 10576811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9449476 + 2418025 = 3074^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11867501 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11867551) 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, 5933750 + 5933751.

It is an arithmetic number, because the mean of its divisors is an integer number (5933751).

Almost surely, 2^11867501 is an apocalyptic number.

It is an amenable number.

11867501 is a deficient number, since it is larger than the sum of its proper divisors (1).

11867501 is an equidigital number, since it uses as much as digits as its factorization.

11867501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 11867501 is about 3444.9239469109. The cubic root of 11867501 is about 228.0970975068.

The spelling of 11867501 in words is "eleven million, eight hundred sixty-seven thousand, five hundred one".