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54542243431 = 1335711174897
BaseRepresentation
bin110010110010111110…
…001001011001100111
312012210010212001020001
4302302332021121213
51343200303242211
641020101322131
73640415263654
oct626276113147
9165703761201
1054542243431
1121149746845
12a6a2106347
1351b2b17230
1428d5ab4c2b
151643529ac1
hexcb2f89667

54542243431 has 8 divisors (see below), whose sum is σ = 58754299184. Its totient is φ = 50332544640.

The previous prime is 54542243383. The next prime is 54542243443. The reversal of 54542243431 is 13434224545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54542243431 - 225 = 54508688999 is a prime.

It is a super-2 number, since 2×545422434312 (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 (54542244431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541026 + ... + 633871.

It is an arithmetic number, because the mean of its divisors is an integer number (7344287398).

Almost surely, 254542243431 is an apocalyptic number.

54542243431 is a deficient number, since it is larger than the sum of its proper divisors (4212055753).

54542243431 is a wasteful number, since it uses less digits than its factorization.

54542243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178481.

The product of its digits is 230400, while the sum is 37.

Adding to 54542243431 its reverse (13434224545), we get a palindrome (67976467976).

The spelling of 54542243431 in words is "fifty-four billion, five hundred forty-two million, two hundred forty-three thousand, four hundred thirty-one".

Divisors: 1 13 3571 46423 1174897 15273661 4195557187 54542243431