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54520122311431 = 723773234379477
BaseRepresentation
bin11000110010101111101001…
…00001100000001100000111
321011001001222001202000022021
430121113310201200030013
524121224202302431211
6311542110505344011
714324643312216610
oct1431276441401407
9234031861660267
1054520122311431
111640a9437875a7
126146446798007
1324562c149a11a
14d66b063b0c07
156482d80c9771
hex3195f4860307

54520122311431 has 16 divisors (see below), whose sum is σ = 65018641319424. Its totient is φ = 44699139311904.

The previous prime is 54520122311359. The next prime is 54520122311443. The reversal of 54520122311431 is 13411322102545.

It is not a de Polignac number, because 54520122311431 - 239 = 53970366497543 is a prime.

It is a super-2 number, since 2×545201223114312 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54520122311231) 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, 10259265 + ... + 14638741.

It is an arithmetic number, because the mean of its divisors is an integer number (4063665082464).

Almost surely, 254520122311431 is an apocalyptic number.

54520122311431 is a deficient number, since it is larger than the sum of its proper divisors (10498519007993).

54520122311431 is a wasteful number, since it uses less digits than its factorization.

54520122311431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456830.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 54520122311431 its reverse (13411322102545), we get a palindrome (67931444413976).

The spelling of 54520122311431 in words is "fifty-four trillion, five hundred twenty billion, one hundred twenty-two million, three hundred eleven thousand, four hundred thirty-one".

Divisors: 1 7 23 161 77323 541261 1778429 4379477 12449003 30656339 100727971 705095797 338634300071 2370440100497 7788588901633 54520122311431