2001332451 has 24 divisors (see below), whose sum is σ = 2753657280. Its totient is φ = 1292557840.

The previous prime is 2001332393. The next prime is 2001332461. The reversal of 2001332451 is 1542331002.

It is not a de Polignac number, because 2001332451 - 2¹⁷ = 2001201379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001332461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891136 + ... + 893378.

It is an arithmetic number, because the mean of its divisors is an integer number (114735720).

Almost surely, 2^2001332451 is an apocalyptic number.

2001332451 is a deficient number, since it is larger than the sum of its proper divisors (752324829).

2001332451 is an equidigital number, since it uses as much as digits as its factorization.

2001332451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2001332451 is about 44736.2543246526. The cubic root of 2001332451 is about 1260.2007849590.

Adding to 2001332451 its reverse (1542331002), we get a palindrome (3543663453).

The spelling of 2001332451 in words is "two billion, one million, three hundred thirty-two thousand, four hundred fifty-one".