53345500 has 96 divisors (see below), whose sum is σ = 130253760. Its totient is φ = 18950400.

The previous prime is 53345497. The next prime is 53345531. The reversal of 53345500 is 554335.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188359 + ... + 188641.

It is an arithmetic number, because the mean of its divisors is an integer number (1356810).

Almost surely, 2^53345500 is an apocalyptic number.

53345500 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 53345500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65126880).

53345500 is an abundant number, since it is smaller than the sum of its proper divisors (76908260).

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

53345500 is a wasteful number, since it uses less digits than its factorization.

53345500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 53345500 is about 7303.8003806238. The cubic root of 53345500 is about 376.4430325553.

Adding to 53345500 its reverse (554335), we get a palindrome (53899835).

The spelling of 53345500 in words is "fifty-three million, three hundred forty-five thousand, five hundred".