164321001 has 16 divisors (see below), whose sum is σ = 262165120. Its totient is φ = 101120400.

The previous prime is 164320999. The next prime is 164321023. The reversal of 164321001 is 100123461.

It is a happy number.

164321001 is a `hidden beast` number, since 1 + 643 + 21 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 164321001 - 2¹ = 164320999 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164321401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233725 + ... + 234426.

It is an arithmetic number, because the mean of its divisors is an integer number (16385320).

Almost surely, 2^164321001 is an apocalyptic number.

It is an amenable number.

164321001 is a deficient number, since it is larger than the sum of its proper divisors (97844119).

164321001 is a wasteful number, since it uses less digits than its factorization.

164321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468173 (or 468167 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 164321001 is about 12818.7753315206. The cubic root of 164321001 is about 547.7272616297.

Adding to 164321001 its reverse (100123461), we get a palindrome (264444462).

The spelling of 164321001 in words is "one hundred sixty-four million, three hundred twenty-one thousand, one".