53445500 has 48 divisors (see below), whose sum is σ = 117717600. Its totient is φ = 21196800.

The previous prime is 53445487. The next prime is 53445527. The reversal of 53445500 is 554435.

It is a self number, because there is not a number n which added to its sum of digits gives 53445500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69116 + ... + 69884.

It is an arithmetic number, because the mean of its divisors is an integer number (2452450).

Almost surely, 2^53445500 is an apocalyptic number.

53445500 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 53445500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58858800).

53445500 is an abundant number, since it is smaller than the sum of its proper divisors (64272100).

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

53445500 is a wasteful number, since it uses less digits than its factorization.

53445500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 53445500 is about 7310.6429265831. The cubic root of 53445500 is about 376.6781089623.

Adding to 53445500 its reverse (554435), we get a palindrome (53999935).

The spelling of 53445500 in words is "fifty-three million, four hundred forty-five thousand, five hundred".