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52540568805 = 3519184352873
BaseRepresentation
bin110000111011101010…
…010111010011100101
312000121122100102211210
4300323222113103211
51330100341200210
640045314422033
73540001315614
oct607352272345
9160548312753
1052540568805
1120311865a9a
12a223891919
134c5420488a
142785d0187b
151577935e20
hexc3ba974e5

52540568805 has 16 divisors (see below), whose sum is σ = 88489379520. Its totient is φ = 26546813568.

The previous prime is 52540568797. The next prime is 52540568809. The reversal of 52540568805 is 50886504525.

It is not a de Polignac number, because 52540568805 - 23 = 52540568797 is a prime.

It is a super-2 number, since 2×525405688052 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52540568809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92176152 + ... + 92176721.

It is an arithmetic number, because the mean of its divisors is an integer number (5530586220).

Almost surely, 252540568805 is an apocalyptic number.

It is an amenable number.

52540568805 is a deficient number, since it is larger than the sum of its proper divisors (35948810715).

52540568805 is a wasteful number, since it uses less digits than its factorization.

52540568805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184352900.

The product of its (nonzero) digits is 1920000, while the sum is 48.

The spelling of 52540568805 in words is "fifty-two billion, five hundred forty million, five hundred sixty-eight thousand, eight hundred five".

Divisors: 1 3 5 15 19 57 95 285 184352873 553058619 921764365 2765293095 3502704587 10508113761 17513522935 52540568805