13555147 has 2 divisors, whose sum is σ = 13555148. Its totient is φ = 13555146.

The previous prime is 13555123. The next prime is 13555177. The reversal of 13555147 is 74155531.

It is a weak prime.

It is an emirp because it is prime and its reverse (74155531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13555147 is a prime.

It is not a weakly prime, because it can be changed into another prime (13555117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777573 + 6777574.

It is an arithmetic number, because the mean of its divisors is an integer number (6777574).

Almost surely, 2^13555147 is an apocalyptic number.

13555147 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555147 is an equidigital number, since it uses as much as digits as its factorization.

13555147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 31.

The square root of 13555147 is about 3681.7315219880. The cubic root of 13555147 is about 238.4339410390.

The spelling of 13555147 in words is "thirteen million, five hundred fifty-five thousand, one hundred forty-seven".