2001004550 has 24 divisors (see below), whose sum is σ = 3940803576. Its totient is φ = 753319040.

The previous prime is 2001004547. The next prime is 2001004571. The reversal of 2001004550 is 554001002.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1176212 + ... + 1177911.

It is an arithmetic number, because the mean of its divisors is an integer number (164200149).

Almost surely, 2^2001004550 is an apocalyptic number.

2001004550 is a deficient number, since it is larger than the sum of its proper divisors (1939799026).

2001004550 is a wasteful number, since it uses less digits than its factorization.

2001004550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354152 (or 2354147 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2001004550 is about 44732.5893504948. The cubic root of 2001004550 is about 1260.1319568695.

Adding to 2001004550 its reverse (554001002), we get a palindrome (2555005552).

The spelling of 2001004550 in words is "two billion, one million, four thousand, five hundred fifty".