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51155001341 = 218627233983
BaseRepresentation
bin101111101001000100…
…110101111111111101
311220001002011022121022
4233221010311333331
51314231140020331
635300021113525
73460445223413
oct575104657775
9156032138538
1051155001341
111a770734714
129ab78588a5
134a9313a382
142693ca92b3
1514e5e9267b
hexbe9135ffd

51155001341 has 4 divisors (see below), whose sum is σ = 51155453952. Its totient is φ = 51154548732.

The previous prime is 51155001251. The next prime is 51155001347. The reversal of 51155001341 is 14310055115.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14310055115 = 52862011023.

It is a cyclic number.

It is not a de Polignac number, because 51155001341 - 226 = 51087892477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51155001341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155001347) 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, 101636 + ... + 335618.

It is an arithmetic number, because the mean of its divisors is an integer number (12788863488).

Almost surely, 251155001341 is an apocalyptic number.

It is an amenable number.

51155001341 is a deficient number, since it is larger than the sum of its proper divisors (452611).

51155001341 is a wasteful number, since it uses less digits than its factorization.

51155001341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452610.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 51155001341 its reverse (14310055115), we get a palindrome (65465056456).

The spelling of 51155001341 in words is "fifty-one billion, one hundred fifty-five million, one thousand, three hundred forty-one".

Divisors: 1 218627 233983 51155001341