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55571750650 = 25213160153401
BaseRepresentation
bin110011110000010101…
…011001111011111010
312022102220001102122001
4303300111121323322
51402302332010100
641310155251214
74005056041513
oct636025317372
9168386042561
1055571750650
1121627893859
12a92aa49b0a
1353181b5cc0
142992703a0a
1516a3ad8d6a
hexcf0559efa

55571750650 has 48 divisors (see below), whose sum is σ = 111386105208. Its totient is φ = 20505600000.

The previous prime is 55571750617. The next prime is 55571750651. The reversal of 55571750650 is 5605717555.

It can be written as a sum of positive squares in 12 ways, for example, as 3388287681 + 52183462969 = 58209^2 + 228437^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55571750650.

It is not an unprimeable number, because it can be changed into a prime (55571750651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1013950 + ... + 1067350.

Almost surely, 255571750650 is an apocalyptic number.

55571750650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55571750650 is an abundant number, since it is smaller than the sum of its proper divisors (55814354558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55571750650 is a wasteful number, since it uses less digits than its factorization.

55571750650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55027 (or 55022 counting only the distinct ones).

The product of its (nonzero) digits is 918750, while the sum is 46.

The spelling of 55571750650 in words is "fifty-five billion, five hundred seventy-one million, seven hundred fifty thousand, six hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 1601 3202 8005 16010 20813 40025 41626 53401 80050 104065 106802 208130 267005 520325 534010 694213 1040650 1335025 1388426 2670050 3471065 6942130 17355325 34710650 85495001 170990002 427475005 854950010 1111435013 2137375025 2222870026 4274750050 5557175065 11114350130 27785875325 55571750650