53500000 has 84 divisors (see below), whose sum is σ = 132888924. Its totient is φ = 21200000.

The previous prime is 53499997. The next prime is 53500033. The reversal of 53500000 is 535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 499947 + ... + 500053.

It is an arithmetic number, because the mean of its divisors is an integer number (1582011).

Almost surely, 2^53500000 is an apocalyptic number.

53500000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66444462).

53500000 is an abundant number, since it is smaller than the sum of its proper divisors (79388924).

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

53500000 is an frugal number, since it uses more digits than its factorization.

53500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 53500000 is about 7314.3694191639. The cubic root of 53500000 is about 376.8061021696.

Adding to 53500000 its reverse (535), we get a palindrome (53500535).

53500000 divided by its reverse (535) gives a 5-th power (100000 = 10⁵).

The spelling of 53500000 in words is "fifty-three million, five hundred thousand".