2001151 has 4 divisors (see below), whose sum is σ = 2013592. Its totient is φ = 1988712.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001151 is 1511002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001151 - 2⁹ = 2000639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001101) 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, 5976 + ... + 6301.

It is an arithmetic number, because the mean of its divisors is an integer number (503398).

2^2001151 is an apocalyptic number.

2001151 is a deficient number, since it is larger than the sum of its proper divisors (12441).

2001151 is a wasteful number, since it uses less digits than its factorization.

2001151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 2001151 is about 1414.6204437940. The cubic root of 2001151 is about 126.0162698399.

Adding to 2001151 its reverse (1511002), we get a palindrome (3512153).

The spelling of 2001151 in words is "two million, one thousand, one hundred fifty-one".