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56015562061 = 412715041451
BaseRepresentation
bin110100001010110010…
…011010010101001101
312100120211011101102201
4310022302122111031
51404204440441221
641422211521501
74022055264364
oct641262322515
9170524141381
1056015562061
1121835362948
12aa335b9291
135389126bc4
1429d56307db
1516cca53891
hexd0ac9a54d

56015562061 has 8 divisors (see below), whose sum is σ = 57593547648. Its totient is φ = 54447660000.

The previous prime is 56015562019. The next prime is 56015562077. The reversal of 56015562061 is 16026551065.

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 56015562061 - 27 = 56015561933 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 56015562061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56015562011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2509615 + ... + 2531836.

It is an arithmetic number, because the mean of its divisors is an integer number (7199193456).

Almost surely, 256015562061 is an apocalyptic number.

It is an amenable number.

56015562061 is a deficient number, since it is larger than the sum of its proper divisors (1577985587).

56015562061 is a wasteful number, since it uses less digits than its factorization.

56015562061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041763.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 56015562061 in words is "fifty-six billion, fifteen million, five hundred sixty-two thousand, sixty-one".

Divisors: 1 41 271 11111 5041451 206699491 1366233221 56015562061