20173001 has 8 divisors (see below), whose sum is σ = 21105024. Its totient is φ = 19245600.

The previous prime is 20172989. The next prime is 20173051. The reversal of 20173001 is 10037102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20173001 - 2¹⁸ = 19910857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20173051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10301 + ... + 12101.

It is an arithmetic number, because the mean of its divisors is an integer number (2638128).

Almost surely, 2^20173001 is an apocalyptic number.

It is an amenable number.

20173001 is a deficient number, since it is larger than the sum of its proper divisors (932023).

20173001 is a wasteful number, since it uses less digits than its factorization.

20173001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20173001 is about 4491.4364072087. The cubic root of 20173001 is about 272.2221773582. Note that the first 3 decimals are identical.

The spelling of 20173001 in words is "twenty million, one hundred seventy-three thousand, one".