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5161205454 = 234718302147
BaseRepresentation
bin1001100111010000…
…11011111011001110
3111022200201101212120
410303220123323032
541032232033304
62212050313410
7241620344136
oct46350337316
914280641776
105161205454
112209403059
121000588866
13643381c32
1436d665ac6
1520319b0d9
hex133a1bece

5161205454 has 16 divisors (see below), whose sum is σ = 10542037248. Its totient is φ = 1683797432.

The previous prime is 5161205417. The next prime is 5161205459. The reversal of 5161205454 is 4545021615.

It is a super-2 number, since 2×51612054542 = 53276083476798692232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161205459) 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 7 ways as a sum of consecutive naturals, for example, 9150792 + ... + 9151355.

It is an arithmetic number, because the mean of its divisors is an integer number (658877328).

Almost surely, 25161205454 is an apocalyptic number.

5161205454 is an abundant number, since it is smaller than the sum of its proper divisors (5380831794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5161205454 is a wasteful number, since it uses less digits than its factorization.

5161205454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18302199.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 5161205454 is about 71841.5301479583. The cubic root of 5161205454 is about 1728.1590732813.

The spelling of 5161205454 in words is "five billion, one hundred sixty-one million, two hundred five thousand, four hundred fifty-four".

Divisors: 1 2 3 6 47 94 141 282 18302147 36604294 54906441 109812882 860200909 1720401818 2580602727 5161205454