55326004500 has 384 divisors, whose sum is σ = 178319232000. Its totient is φ = 13246464000.

The previous prime is 55326004493. The next prime is 55326004543. The reversal of 55326004500 is 540062355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 123220276 + ... + 123220724.

It is an arithmetic number, because the mean of its divisors is an integer number (464373000).

Almost surely, 2^55326004500 is an apocalyptic number.

55326004500 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 55326004500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89159616000).

55326004500 is an abundant number, since it is smaller than the sum of its proper divisors (122993227500).

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

55326004500 is a wasteful number, since it uses less digits than its factorization.

55326004500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 55326004500 its reverse (540062355), we get a palindrome (55866066855).

The spelling of 55326004500 in words is "fifty-five billion, three hundred twenty-six million, four thousand, five hundred".