504001000 has 32 divisors (see below), whose sum is σ = 1179364680. Its totient is φ = 201600000.

The previous prime is 504000977. The next prime is 504001019. The reversal of 504001000 is 100405.

It can be written as a sum of positive squares in 4 ways, for example, as 56340036 + 447660964 = 7506^2 + 21158^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251001 + ... + 253000.

Almost surely, 2^504001000 is an apocalyptic number.

504001000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

504001000 is an abundant number, since it is smaller than the sum of its proper divisors (675363680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

504001000 is a wasteful number, since it uses less digits than its factorization.

504001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504022 (or 504008 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 504001000 is about 22449.9665924028. The cubic root of 504001000 is about 795.8119679092.

Adding to 504001000 its reverse (100405), we get a palindrome (504101405).

The spelling of 504001000 in words is "five hundred four million, one thousand".