55423500 has 96 divisors (see below), whose sum is σ = 176117760. Its totient is φ = 13432000.

The previous prime is 55423469. The next prime is 55423507. The reversal of 55423500 is 532455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55423507) 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, 14821 + ... + 18179.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^55423500 is an apocalyptic number.

55423500 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 55423500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

55423500 is an abundant number, since it is smaller than the sum of its proper divisors (120694260).

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

55423500 is a wasteful number, since it uses less digits than its factorization.

55423500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392 (or 3380 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55423500 is about 7444.6960985657. The cubic root of 55423500 is about 381.2688425696.

Adding to 55423500 its reverse (532455), we get a palindrome (55955955).

The spelling of 55423500 in words is "fifty-five million, four hundred twenty-three thousand, five hundred".