2001153 has 16 divisors (see below), whose sum is σ = 3326976. Its totient is φ = 1039440.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001153 is 3511002.

It is not a de Polignac number, because 2001153 - 2¹² = 1997057 is a prime.

It is a super-2 number, since 2×2001153² = 8009226658818, which contains 22 as substring.

It is a Curzon number.

2001153 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2001163) 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, 4101 + ... + 4562.

It is an arithmetic number, because the mean of its divisors is an integer number (207936).

2^2001153 is an apocalyptic number.

It is an amenable number.

2001153 is a deficient number, since it is larger than the sum of its proper divisors (1325823).

2001153 is a wasteful number, since it uses less digits than its factorization.

2001153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 2001153 is about 1414.6211506972. The cubic root of 2001153 is about 126.0163118212.

Adding to 2001153 its reverse (3511002), we get a palindrome (5512155).

It can be divided in two parts, 2001 and 153, that multiplied together give a triangular number (306153 = T₇₈₂).

The spelling of 2001153 in words is "two million, one thousand, one hundred fifty-three".