11906551 has 2 divisors, whose sum is σ = 11906552. Its totient is φ = 11906550.

The previous prime is 11906539. The next prime is 11906561. The reversal of 11906551 is 15560911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11906551 - 2⁷ = 11906423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11906561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5953275 + 5953276.

It is an arithmetic number, because the mean of its divisors is an integer number (5953276).

Almost surely, 2^11906551 is an apocalyptic number.

11906551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11906551 is an equidigital number, since it uses as much as digits as its factorization.

11906551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11906551 is about 3450.5870515030. The cubic root of 11906551 is about 228.3470080195.

The spelling of 11906551 in words is "eleven million, nine hundred six thousand, five hundred fifty-one".