2001343553 has 8 divisors (see below), whose sum is σ = 2191782240. Its totient is φ = 1812321280.

The previous prime is 2001343523. The next prime is 2001343609. The reversal of 2001343553 is 3553431002.

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

It is not a de Polignac number, because 2001343553 - 2⁸ = 2001343297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001343523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351143 + ... + 356796.

It is an arithmetic number, because the mean of its divisors is an integer number (273972780).

Almost surely, 2^2001343553 is an apocalyptic number.

It is an amenable number.

2001343553 is a deficient number, since it is larger than the sum of its proper divisors (190438687).

2001343553 is a wasteful number, since it uses less digits than its factorization.

2001343553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708207.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2001343553 is about 44736.3784072873. The cubic root of 2001343553 is about 1260.2031151937.

Adding to 2001343553 its reverse (3553431002), we get a palindrome (5554774555).

The spelling of 2001343553 in words is "two billion, one million, three hundred forty-three thousand, five hundred fifty-three".