11855507 has 2 divisors, whose sum is σ = 11855508. Its totient is φ = 11855506.

The previous prime is 11855491. The next prime is 11855521. The reversal of 11855507 is 70555811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11855507 - 2⁴ = 11855491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11855567) 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, 5927753 + 5927754.

It is an arithmetic number, because the mean of its divisors is an integer number (5927754).

Almost surely, 2^11855507 is an apocalyptic number.

11855507 is a deficient number, since it is larger than the sum of its proper divisors (1).

11855507 is an equidigital number, since it uses as much as digits as its factorization.

11855507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 32.

The square root of 11855507 is about 3443.1826846684. The cubic root of 11855507 is about 228.0202287890.

The spelling of 11855507 in words is "eleven million, eight hundred fifty-five thousand, five hundred seven".