53081500 has 24 divisors (see below), whose sum is σ = 115931088. Its totient is φ = 21232400.

The previous prime is 53081489. The next prime is 53081507. The reversal of 53081500 is 518035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53081507) 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, 52582 + ... + 53581.

It is an arithmetic number, because the mean of its divisors is an integer number (4830462).

Almost surely, 2^53081500 is an apocalyptic number.

53081500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53081500 is an abundant number, since it is smaller than the sum of its proper divisors (62849588).

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

53081500 is a wasteful number, since it uses less digits than its factorization.

53081500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106182 (or 106170 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 53081500 is about 7285.7051820671. The cubic root of 53081500 is about 375.8210159903.

Adding to 53081500 its reverse (518035), we get a palindrome (53599535).

The spelling of 53081500 in words is "fifty-three million, eighty-one thousand, five hundred".