Search a number
-
+
55055523351481 = 1097572287291751
BaseRepresentation
bin11001000010010100111001…
…11010011000101110111001
321012221020221002020220000021
430201022130322120232321
524204012202434221411
6313032054104010441
714411426123035462
oct1441123472305671
9235836832226007
1055055523351481
11165a6a09701394
126212167460a21
132494937955673
14d849b7095d69
156571c1aa9a71
hex32129ce98bb9

55055523351481 has 16 divisors (see below), whose sum is σ = 55658532666880. Its totient is φ = 54454357944000.

The previous prime is 55055523351463. The next prime is 55055523351511. The reversal of 55055523351481 is 18415332555055.

55055523351481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55055523351481 - 25 = 55055523351449 is a prime.

It is a super-2 number, since 2×550555233514812 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055523351461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188561356 + ... + 188853106.

It is an arithmetic number, because the mean of its divisors is an integer number (3478658291680).

Almost surely, 255055523351481 is an apocalyptic number.

It is an amenable number.

55055523351481 is a deficient number, since it is larger than the sum of its proper divisors (603009315399).

55055523351481 is a wasteful number, since it uses less digits than its factorization.

55055523351481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294904.

The product of its (nonzero) digits is 9000000, while the sum is 52.

The spelling of 55055523351481 in words is "fifty-five trillion, fifty-five billion, five hundred twenty-three million, three hundred fifty-one thousand, four hundred eighty-one".

Divisors: 1 109 757 2287 82513 249283 291751 1731259 31800859 188707231 220855507 667234537 24073250263 72728564533 505096544509 55055523351481