2001512455 has 8 divisors (see below), whose sum is σ = 2425595904. Its totient is φ = 1585356000.

The previous prime is 2001512449. The next prime is 2001512477. The reversal of 2001512455 is 5542151002.

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

It is not a de Polignac number, because 2001512455 - 2⁹ = 2001511943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981191 + ... + 1982200.

It is an arithmetic number, because the mean of its divisors is an integer number (303199488).

Almost surely, 2^2001512455 is an apocalyptic number.

2001512455 is a deficient number, since it is larger than the sum of its proper divisors (424083449).

2001512455 is a wasteful number, since it uses less digits than its factorization.

2001512455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963497.

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

The square root of 2001512455 is about 44738.2661152620. The cubic root of 2001512455 is about 1260.2385655189.

Adding to 2001512455 its reverse (5542151002), we get a palindrome (7543663457).

The spelling of 2001512455 in words is "two billion, one million, five hundred twelve thousand, four hundred fifty-five".