134666551 has 2 divisors, whose sum is σ = 134666552. Its totient is φ = 134666550.

The previous prime is 134666527. The next prime is 134666561. The reversal of 134666551 is 155666431.

It is a strong prime.

It is an emirp because it is prime and its reverse (155666431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134666551 - 2⁹ = 134666039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134666551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134666501) 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, 67333275 + 67333276.

It is an arithmetic number, because the mean of its divisors is an integer number (67333276).

Almost surely, 2^134666551 is an apocalyptic number.

134666551 is a deficient number, since it is larger than the sum of its proper divisors (1).

134666551 is an equidigital number, since it uses as much as digits as its factorization.

134666551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 134666551 is about 11604.5918066945. The cubic root of 134666551 is about 512.5700729885.

The spelling of 134666551 in words is "one hundred thirty-four million, six hundred sixty-six thousand, five hundred fifty-one".