2001355 has 8 divisors (see below), whose sum is σ = 2409264. Its totient is φ = 1596000.

The previous prime is 2001353. The next prime is 2001361. The reversal of 2001355 is 5531002.

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

It is not a de Polignac number, because 2001355 - 2¹ = 2001353 is a prime.

It is a Duffinian number.

2001355 is a modest number, since divided by 1355 gives 20 as remainder.

2001355 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2505 + ... + 3205.

It is an arithmetic number, because the mean of its divisors is an integer number (301158).

2^2001355 is an apocalyptic number.

2001355 is a deficient number, since it is larger than the sum of its proper divisors (407909).

2001355 is an equidigital number, since it uses as much as digits as its factorization.

2001355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 2001355 is about 1414.6925461032. The cubic root of 2001355 is about 126.0205517833.

Adding to 2001355 its reverse (5531002), we get a palindrome (7532357).

The spelling of 2001355 in words is "two million, one thousand, three hundred fifty-five".