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54055243431 = 337809353531
BaseRepresentation
bin110010010101111100…
…011000111010100111
312011112012110212211000
4302111330120322213
51341201120242211
640455503244343
73622352662620
oct622574307247
9164465425730
1054055243431
1120a19859502
12a586ba96b3
135135c64357
14288b144a47
1516158cd656
hexc95f18ea7

54055243431 has 32 divisors (see below), whose sum is σ = 91635494400. Its totient is φ = 30850441920.

The previous prime is 54055243387. The next prime is 54055243433. The reversal of 54055243431 is 13434255045.

54055243431 is a `hidden beast` number, since 5 + 40 + 552 + 4 + 34 + 31 = 666.

It is not a de Polignac number, because 54055243431 - 233 = 45465308839 is a prime.

It is a super-2 number, since 2×540552434312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54055243433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23865 + ... + 329666.

It is an arithmetic number, because the mean of its divisors is an integer number (2863609200).

Almost surely, 254055243431 is an apocalyptic number.

54055243431 is a deficient number, since it is larger than the sum of its proper divisors (37580250969).

54055243431 is a wasteful number, since it uses less digits than its factorization.

54055243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354356 (or 354350 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 54055243431 its reverse (13434255045), we get a palindrome (67489498476).

The spelling of 54055243431 in words is "fifty-four billion, fifty-five million, two hundred forty-three thousand, four hundred thirty-one".

Divisors: 1 3 7 9 21 27 63 189 809 2427 5663 7281 16989 21843 50967 152901 353531 1060593 2474717 3181779 7424151 9545337 22272453 66817359 286006579 858019737 2002046053 2574059211 6006138159 7722177633 18018414477 54055243431