2001056502 has 32 divisors (see below), whose sum is σ = 4256085600. Its totient is φ = 625033728.

The previous prime is 2001056489. The next prime is 2001056503. The reversal of 2001056502 is 2056501002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001056503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19477 + ... + 66192.

It is an arithmetic number, because the mean of its divisors is an integer number (133002675).

Almost surely, 2^2001056502 is an apocalyptic number.

2001056502 is an abundant number, since it is smaller than the sum of its proper divisors (2255029098).

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

2001056502 is a wasteful number, since it uses less digits than its factorization.

2001056502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85920.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2001056502 is about 44733.1700419275. The cubic root of 2001056502 is about 1260.1428623601.

Adding to 2001056502 its reverse (2056501002), we get a palindrome (4057557504).

The spelling of 2001056502 in words is "two billion, one million, fifty-six thousand, five hundred two".