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56520201517 = 1331140248639
BaseRepresentation
bin110100101000110111…
…011101010100101101
312101212222201201121221
4310220313131110231
51411223132422032
641544240023341
74040423533423
oct645067352455
9171788651557
1056520201517
1121a741a8a4a
12ab54601b51
135439844930
142a42673113
15170bed6597
hexd28ddd52d

56520201517 has 8 divisors (see below), whose sum is σ = 62831390720. Its totient is φ = 50489509680.

The previous prime is 56520201511. The next prime is 56520201547. The reversal of 56520201517 is 71510202565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56520201517 - 223 = 56511812909 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 (56520201511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70123917 + ... + 70124722.

It is an arithmetic number, because the mean of its divisors is an integer number (7853923840).

Almost surely, 256520201517 is an apocalyptic number.

It is an amenable number.

56520201517 is a deficient number, since it is larger than the sum of its proper divisors (6311189203).

56520201517 is a wasteful number, since it uses less digits than its factorization.

56520201517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140248683.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 56520201517 in words is "fifty-six billion, five hundred twenty million, two hundred one thousand, five hundred seventeen".

Divisors: 1 13 31 403 140248639 1823232307 4347707809 56520201517