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54981512 = 236872689
BaseRepresentation
bin1101000110111…
…1001110001000
310211110100110022
43101233032020
5103033402022
65242240012
71235222645
oct321571610
9124410408
1054981512
1129043473
12164b6008
13b510951
147432dcc
154c60c42
hex346f388

54981512 has 8 divisors (see below), whose sum is σ = 103090350. Its totient is φ = 27490752.

The previous prime is 54981491. The next prime is 54981517. The reversal of 54981512 is 21518945.

54981512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37625956 + 17355556 = 6134^2 + 4166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×549815123 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (54981517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3436337 + ... + 3436352.

Almost surely, 254981512 is an apocalyptic number.

It is an amenable number.

54981512 is a deficient number, since it is larger than the sum of its proper divisors (48108838).

54981512 is a wasteful number, since it uses less digits than its factorization.

54981512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872695 (or 6872691 counting only the distinct ones).

The product of its digits is 14400, while the sum is 35.

The square root of 54981512 is about 7414.9519216243. The cubic root of 54981512 is about 380.2526297946.

The spelling of 54981512 in words is "fifty-four million, nine hundred eighty-one thousand, five hundred twelve".

Divisors: 1 2 4 8 6872689 13745378 27490756 54981512