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55165456155 = 3543293929101
BaseRepresentation
bin110011011000000111…
…100000111100011011
312021101120112112100210
4303120013200330123
51400434324044110
641202003102203
73662023432455
oct633007407433
9167346475323
1055165456155
1121439509787
12a836971963
135281c7c664
1429547812d5
15167d0d0520
hexcd81e0f1b

55165456155 has 32 divisors (see below), whose sum is σ = 90351233280. Its totient is φ = 28726588800.

The previous prime is 55165456141. The next prime is 55165456163.

55165456155 is nontrivially palindromic in base 10.

55165456155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55165456155 - 212 = 55165452059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1881105 + ... + 1910205.

It is an arithmetic number, because the mean of its divisors is an integer number (2823476040).

Almost surely, 255165456155 is an apocalyptic number.

55165456155 is a deficient number, since it is larger than the sum of its proper divisors (35185777125).

55165456155 is a wasteful number, since it uses less digits than its factorization.

55165456155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32091.

The product of its digits is 2250000, while the sum is 48.

The spelling of 55165456155 in words is "fifty-five billion, one hundred sixty-five million, four hundred fifty-six thousand, one hundred fifty-five".

Divisors: 1 3 5 15 43 129 215 645 2939 8817 14695 29101 44085 87303 126377 145505 379131 436515 631885 1251343 1895655 3754029 6256715 18770145 85527839 256583517 427639195 1282917585 3677697077 11033091231 18388485385 55165456155