55255075257072 has 160 divisors (see below), whose sum is σ = 145946474542080. Its totient is φ = 18009529574400.

The previous prime is 55255075257023. The next prime is 55255075257079. The reversal of 55255075257072 is 27075257055255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255075257079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1384784322 + ... + 1384824222.

It is an arithmetic number, because the mean of its divisors is an integer number (912165465888).

Almost surely, 2^{55255075257072} 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 55255075257072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72973237271040).

55255075257072 is an abundant number, since it is smaller than the sum of its proper divisors (90691399285008).

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

55255075257072 is a wasteful number, since it uses less digits than its factorization.

55255075257072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43511 (or 43505 counting only the distinct ones).

The product of its (nonzero) digits is 42875000, while the sum is 57.

The spelling of 55255075257072 in words is "fifty-five trillion, two hundred fifty-five billion, seventy-five million, two hundred fifty-seven thousand, seventy-two".