2004555331 has 4 divisors (see below), whose sum is σ = 2010234312. Its totient is φ = 1998876352.

The previous prime is 2004555211. The next prime is 2004555349. The reversal of 2004555331 is 1335554002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1335554002 = 2 ⋅667777001.

It is a cyclic number.

It is not a de Polignac number, because 2004555331 - 2¹⁵ = 2004522563 is a prime.

It is a super-2 number, since 2×2004555331² = 8036484150081039122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2004555331.

It is not an unprimeable number, because it can be changed into a prime (2004555361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2838961 + ... + 2839666.

It is an arithmetic number, because the mean of its divisors is an integer number (502558578).

Almost surely, 2^2004555331 is an apocalyptic number.

2004555331 is a deficient number, since it is larger than the sum of its proper divisors (5678981).

2004555331 is an equidigital number, since it uses as much as digits as its factorization.

2004555331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678980.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 2004555331 is about 44772.2607313948. The cubic root of 2004555331 is about 1260.8768841409.

The spelling of 2004555331 in words is "two billion, four million, five hundred fifty-five thousand, three hundred thirty-one".