164062221 has 4 divisors (see below), whose sum is σ = 218749632. Its totient is φ = 109374812.

The previous prime is 164062177. The next prime is 164062229. The reversal of 164062221 is 122260461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164062221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164062191 and 164062200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164062229) 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 in 3 ways as a sum of consecutive naturals, for example, 27343701 + ... + 27343706.

It is an arithmetic number, because the mean of its divisors is an integer number (54687408).

Almost surely, 2^164062221 is an apocalyptic number.

It is an amenable number.

164062221 is a deficient number, since it is larger than the sum of its proper divisors (54687411).

164062221 is an equidigital number, since it uses as much as digits as its factorization.

164062221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54687410.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 164062221 is about 12808.6775664001. The cubic root of 164062221 is about 547.4395821656.

The spelling of 164062221 in words is "one hundred sixty-four million, sixty-two thousand, two hundred twenty-one".