55255650450 has 384 divisors, whose sum is σ = 184908165120. Its totient is φ = 10545638400.

The previous prime is 55255650449. The next prime is 55255650473. The reversal of 55255650450 is 5405655255.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 191 ways as a sum of consecutive naturals, for example, 34383547 + ... + 34385153.

It is an arithmetic number, because the mean of its divisors is an integer number (481531680).

Almost surely, 2^55255650450 is an apocalyptic number.

55255650450 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 55255650450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92454082560).

55255650450 is an abundant number, since it is smaller than the sum of its proper divisors (129652514670).

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

55255650450 is a wasteful number, since it uses less digits than its factorization.

55255650450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 55255650450 in words is "fifty-five billion, two hundred fifty-five million, six hundred fifty thousand, four hundred fifty".