2001455512 has 16 divisors (see below), whose sum is σ = 4288833360. Its totient is φ = 857766624.

The previous prime is 2001455501. The next prime is 2001455513. The reversal of 2001455512 is 2155541002.

It is a super-3 number, since 3×2001455512³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001455513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17870083 + ... + 17870194.

It is an arithmetic number, because the mean of its divisors is an integer number (268052085).

Almost surely, 2^2001455512 is an apocalyptic number.

It is an amenable number.

2001455512 is an abundant number, since it is smaller than the sum of its proper divisors (2287377848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001455512 is a wasteful number, since it uses less digits than its factorization.

2001455512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35740290 (or 35740286 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 2001455512 is about 44737.6297092280. The cubic root of 2001455512 is about 1260.2266141493.

Adding to 2001455512 its reverse (2155541002), we get a palindrome (4156996514).

The spelling of 2001455512 in words is "two billion, one million, four hundred fifty-five thousand, five hundred twelve".