164550401 has 2 divisors, whose sum is σ = 164550402. Its totient is φ = 164550400.

The previous prime is 164550383. The next prime is 164550427. The reversal of 164550401 is 104055461.

164550401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (164550427) can be obtained adding 164550401 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110145025 + 54405376 = 10495^2 + 7376^2 .

It is an emirp because it is prime and its reverse (104055461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164550401 - 2¹⁰ = 164549377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (164550301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82275200 + 82275201.

It is an arithmetic number, because the mean of its divisors is an integer number (82275201).

Almost surely, 2^164550401 is an apocalyptic number.

It is an amenable number.

164550401 is a deficient number, since it is larger than the sum of its proper divisors (1).

164550401 is an equidigital number, since it uses as much as digits as its factorization.

164550401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 164550401 is about 12827.7200234492. The cubic root of 164550401 is about 547.9820276220.

The spelling of 164550401 in words is "one hundred sixty-four million, five hundred fifty thousand, four hundred one".