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54531287293 = 7291072510533
BaseRepresentation
bin110010110010010100…
…010110100011111101
312012202101020102020011
4302302110112203331
51343140002143133
641015030423221
73640223202610
oct626224264375
9165671212204
1054531287293
112114354328a
12a69a501b11
1351b077c402
1428d4462177
1516425b36cd
hexcb25168fd

54531287293 has 16 divisors (see below), whose sum is σ = 65073041280. Its totient is φ = 44707553856.

The previous prime is 54531287267. The next prime is 54531287297. The reversal of 54531287293 is 39278213545.

It is a de Polignac number, because none of the positive numbers 2k-54531287293 is a prime.

It is a super-2 number, since 2×545312872932 (a number of 22 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 (54531287297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233546 + ... + 1276987.

It is an arithmetic number, because the mean of its divisors is an integer number (4067065080).

Almost surely, 254531287293 is an apocalyptic number.

It is an amenable number.

54531287293 is a deficient number, since it is larger than the sum of its proper divisors (10541753987).

54531287293 is a wasteful number, since it uses less digits than its factorization.

54531287293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510676.

The product of its digits is 1814400, while the sum is 49.

The spelling of 54531287293 in words is "fifty-four billion, five hundred thirty-one million, two hundred eighty-seven thousand, two hundred ninety-three".

Divisors: 1 7 29 107 203 749 3103 21721 2510533 17573731 72805457 268627031 509638199 1880389217 7790183899 54531287293