2001024155 has 16 divisors (see below), whose sum is σ = 2612606304. Its totient is φ = 1462440960.

The previous prime is 2001024133. The next prime is 2001024161. The reversal of 2001024155 is 5514201002.

It is a de Polignac number, because none of the positive numbers 2^k-2001024155 is a prime.

It is a Duffinian 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, 152381 + ... + 164990.

It is an arithmetic number, because the mean of its divisors is an integer number (163287894).

Almost surely, 2^2001024155 is an apocalyptic number.

2001024155 is a deficient number, since it is larger than the sum of its proper divisors (611582149).

2001024155 is a wasteful number, since it uses less digits than its factorization.

2001024155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317486.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2001024155 is about 44732.8084854953. The cubic root of 2001024155 is about 1260.1360722702.

Adding to 2001024155 its reverse (5514201002), we get a palindrome (7515225157).

The spelling of 2001024155 in words is "two billion, one million, twenty-four thousand, one hundred fifty-five".