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54155532288 = 21131113531163
BaseRepresentation
bin110010011011111010…
…111101100000000000
312011210012012002021010
4302123322331200000
51341402304013123
640513445000520
73625011300144
oct623372754000
9164705162233
1054155532288
1120a70427a60
12a5b46b3140
135150979480
14289a5ad224
15161e5dd993
hexc9bebd800

54155532288 has 384 divisors, whose sum is σ = 172969655040. Its totient is φ = 14849802240.

The previous prime is 54155532283. The next prime is 54155532317. The reversal of 54155532288 is 88223555145.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×541555322882 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54155532283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46564795 + ... + 46565957.

It is an arithmetic number, because the mean of its divisors is an integer number (450441810).

Almost surely, 254155532288 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 54155532288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86484827520).

54155532288 is an abundant number, since it is smaller than the sum of its proper divisors (118814122752).

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

54155532288 is a wasteful number, since it uses less digits than its factorization.

54155532288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1245 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 48.

The spelling of 54155532288 in words is "fifty-four billion, one hundred fifty-five million, five hundred thirty-two thousand, two hundred eighty-eight".