55771402050 has 576 divisors, whose sum is σ = 198757278720. Its totient is φ = 10882045440.

The previous prime is 55771402039. The next prime is 55771402081. The reversal of 55771402050 is 5020417755.

55771402050 is a `hidden beast` number, since 5 + 577 + 14 + 0 + 20 + 50 = 666.

55771402050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55771402050² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55771401996 and 55771402014.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 33455317 + ... + 33456983.

It is an arithmetic number, because the mean of its divisors is an integer number (345064720).

Almost surely, 2^55771402050 is an apocalyptic number.

55771402050 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 55771402050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99378639360).

55771402050 is an abundant number, since it is smaller than the sum of its proper divisors (142985876670).

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

55771402050 is a wasteful number, since it uses less digits than its factorization.

55771402050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The spelling of 55771402050 in words is "fifty-five billion, seven hundred seventy-one million, four hundred two thousand, fifty".