55253642535520 has 384 divisors, whose sum is σ = 154578601981440. Its totient is φ = 18399246336000.

The previous prime is 55253642535461. The next prime is 55253642535523. The reversal of 55253642535520 is 2553524635255.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55253642535523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4710048055 + ... + 4710059785.

It is an arithmetic number, because the mean of its divisors is an integer number (402548442660).

Almost surely, 2^{55253642535520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55253642535520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77289300990720).

55253642535520 is an abundant number, since it is smaller than the sum of its proper divisors (99324959445920).

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

55253642535520 is a wasteful number, since it uses less digits than its factorization.

55253642535520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13390 (or 13382 counting only the distinct ones).

The product of its (nonzero) digits is 27000000, while the sum is 52.

The spelling of 55253642535520 in words is "fifty-five trillion, two hundred fifty-three billion, six hundred forty-two million, five hundred thirty-five thousand, five hundred twenty".