164251 has 2 divisors, whose sum is σ = 164252. Its totient is φ = 164250.

The previous prime is 164249. The next prime is 164267. The reversal of 164251 is 152461.

It is a weak prime.

It is an emirp because it is prime and its reverse (152461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164251 - 2¹ = 164249 is a prime.

Together with 164249, it forms a pair of twin primes.

It is a Chen prime.

164251 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (164201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82125 + 82126.

It is an arithmetic number, because the mean of its divisors is an integer number (82126).

2¹⁶⁴²⁵¹ is an apocalyptic number.

164251 is a deficient number, since it is larger than the sum of its proper divisors (1).

164251 is an equidigital number, since it uses as much as digits as its factorization.

164251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 164251 is about 405.2789163033. The cubic root of 164251 is about 54.7649473030.

The spelling of 164251 in words is "one hundred sixty-four thousand, two hundred fifty-one".