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53871457830 = 23517310379857
BaseRepresentation
bin110010001010111111…
…010011011000100110
312011001101122121100220
4302022333103120212
51340312043122310
640425340145210
73614661556551
oct621277233046
9164041577326
1053871457830
1120935040683
12a535538206
135106b66388
142870983698
1516046c8670
hexc8afd3626

53871457830 has 32 divisors (see below), whose sum is σ = 130038861024. Its totient is φ = 14282681856.

The previous prime is 53871457823. The next prime is 53871457837. The reversal of 53871457830 is 3875417835.

It is an interprime number because it is at equal distance from previous prime (53871457823) and next prime (53871457837).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53871457837) 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, 5184739 + ... + 5195118.

It is an arithmetic number, because the mean of its divisors is an integer number (4063714407).

Almost surely, 253871457830 is an apocalyptic number.

53871457830 is an abundant number, since it is smaller than the sum of its proper divisors (76167403194).

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

53871457830 is a wasteful number, since it uses less digits than its factorization.

53871457830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380040.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 53871457830 in words is "fifty-three billion, eight hundred seventy-one million, four hundred fifty-seven thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 173 346 519 865 1038 1730 2595 5190 10379857 20759714 31139571 51899285 62279142 103798570 155697855 311395710 1795715261 3591430522 5387145783 8978576305 10774291566 17957152610 26935728915 53871457830