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51512234341 = 71711718331
BaseRepresentation
bin101111111110010111…
…100101000101100101
311220221222100122011011
4233332113211011211
51320444112444331
635355301542221
73502343524141
oct577627450545
9156858318134
1051512234341
111a93434a0a7
129b97414971
134b1c156849
1426c94da221
1515175093b1
hexbfe5e5165

51512234341 has 4 divisors (see below), whose sum is σ = 51513024384. Its totient is φ = 51511444300.

The previous prime is 51512234329. The next prime is 51512234413. The reversal of 51512234341 is 14343221515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51512234341 - 225 = 51478679909 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 (51512534341) 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, 287455 + ... + 430876.

It is an arithmetic number, because the mean of its divisors is an integer number (12878256096).

Almost surely, 251512234341 is an apocalyptic number.

It is an amenable number.

51512234341 is a deficient number, since it is larger than the sum of its proper divisors (790043).

51512234341 is an equidigital number, since it uses as much as digits as its factorization.

51512234341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790042.

The product of its digits is 14400, while the sum is 31.

Adding to 51512234341 its reverse (14343221515), we get a palindrome (65855455856).

The spelling of 51512234341 in words is "fifty-one billion, five hundred twelve million, two hundred thirty-four thousand, three hundred forty-one".

Divisors: 1 71711 718331 51512234341