53503000 has 32 divisors (see below), whose sum is σ = 125199360. Its totient is φ = 21400800.

The previous prime is 53502997. The next prime is 53503001. The reversal of 53503000 is 30535.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53503001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25752 + ... + 27751.

It is an arithmetic number, because the mean of its divisors is an integer number (3912480).

Almost surely, 2^53503000 is an apocalyptic number.

53503000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53503000 is an abundant number, since it is smaller than the sum of its proper divisors (71696360).

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

53503000 is a wasteful number, since it uses less digits than its factorization.

53503000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53524 (or 53510 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 53503000 is about 7314.5744920672. The cubic root of 53503000 is about 376.8131451427.

Adding to 53503000 its reverse (30535), we get a palindrome (53533535).

The spelling of 53503000 in words is "fifty-three million, five hundred three thousand".