2001033155 has 8 divisors (see below), whose sum is σ = 2619534384. Its totient is φ = 1455296800.

The previous prime is 2001033121. The next prime is 2001033163. The reversal of 2001033155 is 5513301002.

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

It is not a de Polignac number, because 2001033155 - 2¹⁸ = 2000771011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18191156 + ... + 18191265.

It is an arithmetic number, because the mean of its divisors is an integer number (327441798).

Almost surely, 2^2001033155 is an apocalyptic number.

2001033155 is a deficient number, since it is larger than the sum of its proper divisors (618501229).

2001033155 is a wasteful number, since it uses less digits than its factorization.

2001033155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36382437.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 2001033155 is about 44732.9090826877. The cubic root of 2001033155 is about 1260.1379615040.

Adding to 2001033155 its reverse (5513301002), we get a palindrome (7514334157).

The spelling of 2001033155 in words is "two billion, one million, thirty-three thousand, one hundred fifty-five".