55233531450 has 240 divisors, whose sum is σ = 157743653760. Its totient is φ = 14324014080.

The previous prime is 55233531413. The next prime is 55233531511. The reversal of 55233531450 is 5413533255.

55233531450 is a `hidden beast` number, since 5 + 5 + 2 + 335 + 314 + 5 + 0 = 666.

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 119 ways as a sum of consecutive naturals, for example, 23176959 + ... + 23179341.

It is an arithmetic number, because the mean of its divisors is an integer number (657265224).

Almost surely, 2^55233531450 is an apocalyptic number.

55233531450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55233531450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78871826880).

55233531450 is an abundant number, since it is smaller than the sum of its proper divisors (102510122310).

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

55233531450 is a wasteful number, since it uses less digits than its factorization.

55233531450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 55233531450 in words is "fifty-five billion, two hundred thirty-three million, five hundred thirty-one thousand, four hundred fifty".