164601401 has 4 divisors (see below), whose sum is σ = 165454452. Its totient is φ = 163748352.

The previous prime is 164601397. The next prime is 164601403. The reversal of 164601401 is 104106461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34527376 + 130074025 = 5876^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 164601401 - 2² = 164601397 is a prime.

It is a super-2 number, since 2×164601401² = 54187242422325602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164601403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426236 + ... + 426621.

It is an arithmetic number, because the mean of its divisors is an integer number (41363613).

Almost surely, 2^164601401 is an apocalyptic number.

It is an amenable number.

164601401 is a deficient number, since it is larger than the sum of its proper divisors (853051).

164601401 is an equidigital number, since it uses as much as digits as its factorization.

164601401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853050.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 164601401 is about 12829.7077519326. The cubic root of 164601401 is about 548.0386347901.

Adding to 164601401 its reverse (104106461), we get a palindrome (268707862).

The spelling of 164601401 in words is "one hundred sixty-four million, six hundred one thousand, four hundred one".