2001511245 has 16 divisors (see below), whose sum is σ = 3202974720. Its totient is φ = 1067287104.

The previous prime is 2001511231. The next prime is 2001511277. The reversal of 2001511245 is 5421151002.

It is not a de Polignac number, because 2001511245 - 2¹⁴ = 2001494861 is a prime.

It is a super-2 number, since 2×2001511245² = 8012094527722900050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 152067 + ... + 164703.

It is an arithmetic number, because the mean of its divisors is an integer number (200185920).

Almost surely, 2^2001511245 is an apocalyptic number.

It is an amenable number.

2001511245 is a deficient number, since it is larger than the sum of its proper divisors (1201463475).

2001511245 is a wasteful number, since it uses less digits than its factorization.

2001511245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23204.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2001511245 is about 44738.2525921610. The cubic root of 2001511245 is about 1260.2383115628.

Adding to 2001511245 its reverse (5421151002), we get a palindrome (7422662247).

The spelling of 2001511245 in words is "two billion, one million, five hundred eleven thousand, two hundred forty-five".