164226247 has 2 divisors, whose sum is σ = 164226248. Its totient is φ = 164226246.

The previous prime is 164226229. The next prime is 164226263. The reversal of 164226247 is 742622461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164226247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164226287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82113123 + 82113124.

It is an arithmetic number, because the mean of its divisors is an integer number (82113124).

Almost surely, 2^164226247 is an apocalyptic number.

164226247 is a deficient number, since it is larger than the sum of its proper divisors (1).

164226247 is an equidigital number, since it uses as much as digits as its factorization.

164226247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 164226247 is about 12815.0788916807. The cubic root of 164226247 is about 547.6219609731.

It can be divided in two parts, 1642 and 26247, that added together give a square (27889 = 167²).

The spelling of 164226247 in words is "one hundred sixty-four million, two hundred twenty-six thousand, two hundred forty-seven".