2001320057 has 8 divisors (see below), whose sum is σ = 2183849472. Its totient is φ = 1818889200.

The previous prime is 2001320051. The next prime is 2001320059. The reversal of 2001320057 is 7500231002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001320057 - 2⁶ = 2001319993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001320051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21608 + ... + 66854.

It is an arithmetic number, because the mean of its divisors is an integer number (272981184).

Almost surely, 2^2001320057 is an apocalyptic number.

It is an amenable number.

2001320057 is a deficient number, since it is larger than the sum of its proper divisors (182529415).

2001320057 is a wasteful number, since it uses less digits than its factorization.

2001320057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49279.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2001320057 is about 44736.1158014417. The cubic root of 2001320057 is about 1260.1981835320.

Adding to 2001320057 its reverse (7500231002), we get a palindrome (9501551059).

The spelling of 2001320057 in words is "two billion, one million, three hundred twenty thousand, fifty-seven".