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54124420155 = 3513277561129
BaseRepresentation
bin110010011010000100…
…010001110000111011
312011201000122102102220
4302122010101300323
51341321322421110
640510414055123
73624152660211
oct623204216073
9164630572386
1054124420155
1120a54907a53
12a5a61aa4a3
1351473a5220
1428963d0cb1
15161b9e5370
hexc9a111c3b

54124420155 has 16 divisors (see below), whose sum is σ = 93260539680. Its totient is φ = 26645868288.

The previous prime is 54124420153. The next prime is 54124420177. The reversal of 54124420155 is 55102442145.

It is a happy number.

It is not a de Polignac number, because 54124420155 - 21 = 54124420153 is a prime.

It is a super-2 number, since 2×541244201552 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54124420153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138780370 + ... + 138780759.

It is an arithmetic number, because the mean of its divisors is an integer number (5828783730).

Almost surely, 254124420155 is an apocalyptic number.

54124420155 is a deficient number, since it is larger than the sum of its proper divisors (39136119525).

54124420155 is a wasteful number, since it uses less digits than its factorization.

54124420155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277561150.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 54124420155 in words is "fifty-four billion, one hundred twenty-four million, four hundred twenty thousand, one hundred fifty-five".

Divisors: 1 3 5 13 15 39 65 195 277561129 832683387 1387805645 3608294677 4163416935 10824884031 18041473385 54124420155