172323001 has 4 divisors (see below), whose sum is σ = 172392052. Its totient is φ = 172253952.

The previous prime is 172322963. The next prime is 172323007. The reversal of 172323001 is 100323271.

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 67240000 + 105083001 = 8200^2 + 10251^2 .

It is a cyclic number.

It is not a de Polignac number, because 172323001 - 2¹⁹ = 171798713 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 172323001.

It is not an unprimeable number, because it can be changed into a prime (172323007) 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, 30636 + ... + 35821.

It is an arithmetic number, because the mean of its divisors is an integer number (43098013).

Almost surely, 2^172323001 is an apocalyptic number.

It is an amenable number.

172323001 is a deficient number, since it is larger than the sum of its proper divisors (69051).

172323001 is an equidigital number, since it uses as much as digits as its factorization.

172323001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69050.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 172323001 is about 13127.1855704107. The cubic root of 172323001 is about 556.4776800391.

Adding to 172323001 its reverse (100323271), we get a palindrome (272646272).

The spelling of 172323001 in words is "one hundred seventy-two million, three hundred twenty-three thousand, one".