2001534506 has 8 divisors (see below), whose sum is σ = 3058949124. Its totient is φ = 981884800.

The previous prime is 2001534487. The next prime is 2001534523. The reversal of 2001534506 is 6054351002.

It can be written as a sum of positive squares in 2 ways, for example, as 1787175625 + 214358881 = 42275^2 + 14641^2 .

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

It is a super-2 number, since 2×2001534506² = 8012280757417328072, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9441095 + ... + 9441306.

Almost surely, 2^2001534506 is an apocalyptic number.

2001534506 is a deficient number, since it is larger than the sum of its proper divisors (1057414618).

2001534506 is a wasteful number, since it uses less digits than its factorization.

2001534506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18882456.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2001534506 is about 44738.5125590916. The cubic root of 2001534506 is about 1260.2431935888.

Adding to 2001534506 its reverse (6054351002), we get a palindrome (8055885508).

The spelling of 2001534506 in words is "two billion, one million, five hundred thirty-four thousand, five hundred six".