2005504 has 20 divisors (see below), whose sum is σ = 4008114. Its totient is φ = 1002496.

The previous prime is 2005499. The next prime is 2005519. The reversal of 2005504 is 4055002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 565504 = 1200^2 + 752^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1447 + ... + 2470.

2^2005504 is an apocalyptic number.

It is an amenable number.

2005504 is a deficient number, since it is larger than the sum of its proper divisors (2002610).

2005504 is an frugal number, since it uses more digits than its factorization.

2005504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935 (or 3919 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 2005504 is about 1416.1581832550. The cubic root of 2005504 is about 126.1075758865.

The spelling of 2005504 in words is "two million, five thousand, five hundred four".