164155547 has 2 divisors, whose sum is σ = 164155548. Its totient is φ = 164155546.

The previous prime is 164155543. The next prime is 164155549. The reversal of 164155547 is 745551461.

It is a strong prime.

It is an emirp because it is prime and its reverse (745551461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164155547 - 2² = 164155543 is a prime.

It is a super-2 number, since 2×164155547² = 53894087221738418, which contains 22 as substring.

Together with 164155549, it forms a pair of twin primes.

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 164155547.

It is not a weakly prime, because it can be changed into another prime (164155543) 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, 82077773 + 82077774.

It is an arithmetic number, because the mean of its divisors is an integer number (82077774).

Almost surely, 2^164155547 is an apocalyptic number.

164155547 is a deficient number, since it is larger than the sum of its proper divisors (1).

164155547 is an equidigital number, since it uses as much as digits as its factorization.

164155547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 38.

The square root of 164155547 is about 12812.3201255666. The cubic root of 164155547 is about 547.5433652744.

The spelling of 164155547 in words is "one hundred sixty-four million, one hundred fifty-five thousand, five hundred forty-seven".