55212503550 has 96 divisors (see below), whose sum is σ = 141278100480. Its totient is φ = 14262518400.

The previous prime is 55212503537. The next prime is 55212503561. The reversal of 55212503550 is 5530521255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 584095 + ... + 672005.

It is an arithmetic number, because the mean of its divisors is an integer number (1471646880).

Almost surely, 2^55212503550 is an apocalyptic number.

55212503550 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 55212503550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70639050240).

55212503550 is an abundant number, since it is smaller than the sum of its proper divisors (86065596930).

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

55212503550 is a wasteful number, since it uses less digits than its factorization.

55212503550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88058 (or 88053 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The spelling of 55212503550 in words is "fifty-five billion, two hundred twelve million, five hundred three thousand, five hundred fifty".