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51267653141 = 149344078209
BaseRepresentation
bin101111101111110010…
…100100111000010101
311220022221010121211012
4233233302210320111
51314444004400031
635315123422005
73463313601335
oct575762447025
9156287117735
1051267653141
111a819287681
129b29524905
134ab0590743
1426a4c310c5
151500ce5b2b
hexbefca4e15

51267653141 has 4 divisors (see below), whose sum is σ = 51611731500. Its totient is φ = 50923574784.

The previous prime is 51267653123. The next prime is 51267653159. The reversal of 51267653141 is 14135676215.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51267653123) and next prime (51267653159).

It can be written as a sum of positive squares in 2 ways, for example, as 9877378225 + 41390274916 = 99385^2 + 203446^2 .

It is a cyclic number.

It is not a de Polignac number, because 51267653141 - 214 = 51267636757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51267653441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172038956 + ... + 172039253.

It is an arithmetic number, because the mean of its divisors is an integer number (12902932875).

Almost surely, 251267653141 is an apocalyptic number.

It is an amenable number.

51267653141 is a deficient number, since it is larger than the sum of its proper divisors (344078359).

51267653141 is a wasteful number, since it uses less digits than its factorization.

51267653141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344078358.

The product of its digits is 151200, while the sum is 41.

The spelling of 51267653141 in words is "fifty-one billion, two hundred sixty-seven million, six hundred fifty-three thousand, one hundred forty-one".

Divisors: 1 149 344078209 51267653141