55572357083256 has 512 divisors, whose sum is σ = 178845175756800. Its totient is φ = 15837144883200.

The previous prime is 55572357083251. The next prime is 55572357083267. The reversal of 55572357083256 is 65238075327555.

55572357083256 is a `hidden beast` number, since 5 + 5 + 5 + 7 + 2 + 3 + 570 + 8 + 3 + 2 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55572357083193 and 55572357083202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572357083251) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 771234526 + ... + 771306578.

It is an arithmetic number, because the mean of its divisors is an integer number (349306983900).

Almost surely, 2^{55572357083256} 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 55572357083256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89422587878400).

55572357083256 is an abundant number, since it is smaller than the sum of its proper divisors (123272818673544).

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

55572357083256 is a wasteful number, since it uses less digits than its factorization.

55572357083256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72356 (or 72346 counting only the distinct ones).

The product of its (nonzero) digits is 264600000, while the sum is 63.

The spelling of 55572357083256 in words is "fifty-five trillion, five hundred seventy-two billion, three hundred fifty-seven million, eighty-three thousand, two hundred fifty-six".