It is a tau number, because it is divible by the number of its divisors (24).
It is a self number, because there is not a number n which added to its sum of digits gives 2001504.
It is a congruent number.
22001504 is an apocalyptic number.
2001504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2001504 is a wasteful number, since it uses less digits than its factorization.
2001504 is an odious number, because the sum of its binary digits is odd.
The square root of 2001504 is about 1414.7452067422. The cubic root of 2001504 is about 126.0236790972.
Adding to 2001504 its reverse (4051002), we get a palindrome (6052506).
The spelling of 2001504 in words is "two million, one thousand, five hundred four".