164531222 has 32 divisors (see below), whose sum is σ = 264971520. Its totient is φ = 76399200.

The previous prime is 164531221. The next prime is 164531243. The reversal of 164531222 is 222135461.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 164531191 and 164531200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164531221) 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 15 ways as a sum of consecutive naturals, for example, 625463 + ... + 625725.

It is an arithmetic number, because the mean of its divisors is an integer number (8280360).

Almost surely, 2^164531222 is an apocalyptic number.

164531222 is a deficient number, since it is larger than the sum of its proper divisors (100440298).

164531222 is a wasteful number, since it uses less digits than its factorization.

164531222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its digits is 2880, while the sum is 26.

The square root of 164531222 is about 12826.9724409153. The cubic root of 164531222 is about 547.9607369706.

Adding to 164531222 its reverse (222135461), we get a palindrome (386666683).

The spelling of 164531222 in words is "one hundred sixty-four million, five hundred thirty-one thousand, two hundred twenty-two".