12075551 has 2 divisors, whose sum is σ = 12075552. Its totient is φ = 12075550.

The previous prime is 12075533. The next prime is 12075599. The reversal of 12075551 is 15557021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12075551 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12075551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12075251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6037775 + 6037776.

It is an arithmetic number, because the mean of its divisors is an integer number (6037776).

Almost surely, 2^12075551 is an apocalyptic number.

12075551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12075551 is an equidigital number, since it uses as much as digits as its factorization.

12075551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 12075551 is about 3474.9893525017. The cubic root of 12075551 is about 229.4223120584.

The spelling of 12075551 in words is "twelve million, seventy-five thousand, five hundred fifty-one".