164254321 has 12 divisors (see below), whose sum is σ = 208442160. Its totient is φ = 127989960.

The previous prime is 164254313. The next prime is 164254361. The reversal of 164254321 is 123452461.

It is not a de Polignac number, because 164254321 - 2³ = 164254313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164254321.

It is not an unprimeable number, because it can be changed into a prime (164254301) 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 11 ways as a sum of consecutive naturals, for example, 151831 + ... + 152908.

It is an arithmetic number, because the mean of its divisors is an integer number (17370180).

Almost surely, 2^164254321 is an apocalyptic number.

164254321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

164254321 is a deficient number, since it is larger than the sum of its proper divisors (44187839).

164254321 is a wasteful number, since it uses less digits than its factorization.

164254321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304764 (or 304757 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 164254321 is about 12816.1741951333. The cubic root of 164254321 is about 547.6531639898.

The spelling of 164254321 in words is "one hundred sixty-four million, two hundred fifty-four thousand, three hundred twenty-one".