172397001 has 16 divisors (see below), whose sum is σ = 265304448. Its totient is φ = 97536000.

The previous prime is 172396993. The next prime is 172397021. The reversal of 172397001 is 100793271.

It is not a de Polignac number, because 172397001 - 2³ = 172396993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172397001.

It is not an unprimeable number, because it can be changed into a prime (172397021) 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, 38520 + ... + 42761.

It is an arithmetic number, because the mean of its divisors is an integer number (16581528).

Almost surely, 2^172397001 is an apocalyptic number.

It is an amenable number.

172397001 is a deficient number, since it is larger than the sum of its proper divisors (92907447).

172397001 is a wasteful number, since it uses less digits than its factorization.

172397001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81392.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 172397001 is about 13130.0038461533. The cubic root of 172397001 is about 556.5573239926.

The spelling of 172397001 in words is "one hundred seventy-two million, three hundred ninety-seven thousand, one".