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51523505041 = 239215579519
BaseRepresentation
bin101111111111000010…
…100100101110010001
311220222202120020122111
4233333002210232101
51321010004130131
635400343305321
73502541365261
oct577702445621
9156882506574
1051523505041
111a93a747a28
129b9b14b241
134b215a18b8
1426cabd17a1
1515184d3ab1
hexbff0a4b91

51523505041 has 4 divisors (see below), whose sum is σ = 51739084800. Its totient is φ = 51307925284.

The previous prime is 51523505027. The next prime is 51523505053. The reversal of 51523505041 is 14050532515.

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 51523505041 - 25 = 51523505009 is a prime.

It is a super-3 number, since 3×515235050413 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51523504994 and 51523505012.

It is not an unprimeable number, because it can be changed into a prime (51523505641) 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, 107789521 + ... + 107789998.

It is an arithmetic number, because the mean of its divisors is an integer number (12934771200).

Almost surely, 251523505041 is an apocalyptic number.

It is an amenable number.

51523505041 is a deficient number, since it is larger than the sum of its proper divisors (215579759).

51523505041 is a wasteful number, since it uses less digits than its factorization.

51523505041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215579758.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 51523505041 in words is "fifty-one billion, five hundred twenty-three million, five hundred five thousand, forty-one".

Divisors: 1 239 215579519 51523505041