2001245355 has 24 divisors (see below), whose sum is σ = 3672875232. Its totient is φ = 1004546304.

The previous prime is 2001245353. The next prime is 2001245359. The reversal of 2001245355 is 5535421002.

It is a happy number.

2001245355 is a `hidden beast` number, since 2 + 0 + 0 + 124 + 535 + 5 = 666.

It is not a de Polignac number, because 2001245355 - 2¹ = 2001245353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001245353) 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, 1307239 + ... + 1308768.

It is an arithmetic number, because the mean of its divisors is an integer number (153036468).

Almost surely, 2^2001245355 is an apocalyptic number.

2001245355 is a deficient number, since it is larger than the sum of its proper divisors (1671629877).

2001245355 is a wasteful number, since it uses less digits than its factorization.

2001245355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616035 (or 2616032 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2001245355 is about 44735.2808753896. The cubic root of 2001245355 is about 1260.1825037984.

Adding to 2001245355 its reverse (5535421002), we get a palindrome (7536666357).

The spelling of 2001245355 in words is "two billion, one million, two hundred forty-five thousand, three hundred fifty-five".