55233500 has 96 divisors (see below), whose sum is σ = 141453312. Its totient is φ = 18446400.

The previous prime is 55233469. The next prime is 55233509. The reversal of 55233500 is 533255.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55233509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150317 + ... + 150683.

It is an arithmetic number, because the mean of its divisors is an integer number (1473472).

Almost surely, 2^55233500 is an apocalyptic number.

55233500 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 55233500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70726656).

55233500 is an abundant number, since it is smaller than the sum of its proper divisors (86219812).

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

55233500 is a wasteful number, since it uses less digits than its factorization.

55233500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 55233500 is about 7431.9243806702. The cubic root of 55233500 is about 380.8326616613.

Adding to 55233500 its reverse (533255), we get a palindrome (55766755).

The spelling of 55233500 in words is "fifty-five million, two hundred thirty-three thousand, five hundred".