30001 has 4 divisors (see below), whose sum is σ = 31600. Its totient is φ = 28404.

The previous prime is 29989. The next prime is 30011. The reversal of 30001 is 10003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10003 = 7 ⋅1429.

It is a cyclic number.

It is not a de Polignac number, because 30001 - 2⁷ = 29873 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (30011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771 + ... + 808.

It is an arithmetic number, because the mean of its divisors is an integer number (7900).

2³⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

30001 is a deficient number, since it is larger than the sum of its proper divisors (1599).

30001 is a wasteful number, since it uses less digits than its factorization.

30001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 30001 is about 173.2079674842. The cubic root of 30001 is about 31.0726703038.

Adding to 30001 its reverse (10003), we get a palindrome (40004).

The spelling of 30001 in words is "thirty thousand, one".