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54542545431 = 3111652804407
BaseRepresentation
bin110010110010111111…
…010011001000010111
312012210011102101111020
4302302333103020113
51343200342423211
641020112012223
73640420662303
oct626277231027
9165704371436
1054542545431
1121149932730
12a6a2231073
1351b2bc182a
1428d5b52d03
151643589306
hexcb2fd3217

54542545431 has 8 divisors (see below), whose sum is σ = 79334611584. Its totient is φ = 33056088120.

The previous prime is 54542545399. The next prime is 54542545439. The reversal of 54542545431 is 13454524545.

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

It is not a de Polignac number, because 54542545431 - 25 = 54542545399 is a prime.

It is a super-2 number, since 2×545425454312 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54542545439) 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, 826402171 + ... + 826402236.

It is an arithmetic number, because the mean of its divisors is an integer number (9916826448).

Almost surely, 254542545431 is an apocalyptic number.

54542545431 is a deficient number, since it is larger than the sum of its proper divisors (24792066153).

54542545431 is a wasteful number, since it uses less digits than its factorization.

54542545431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652804421.

The product of its digits is 960000, while the sum is 42.

The spelling of 54542545431 in words is "fifty-four billion, five hundred forty-two million, five hundred forty-five thousand, four hundred thirty-one".

Divisors: 1 3 11 33 1652804407 4958413221 18180848477 54542545431