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52900051780 = 2252645002589
BaseRepresentation
bin110001010001000101…
…101011101101000100
312001112200210001210001
4301101011223231010
51331314403124110
640145115411044
73551625010132
oct612105535504
9161480701701
1052900051780
1120486777964
12a304153a84
134cb082b1b4
1427bb95a752
15159929463a
hexc5116bb44

52900051780 has 12 divisors (see below), whose sum is σ = 111090108780. Its totient is φ = 21160020704.

The previous prime is 52900051751. The next prime is 52900051781. The reversal of 52900051780 is 8715000925.

It can be written as a sum of positive squares in 2 ways, for example, as 7329756996 + 45570294784 = 85614^2 + 213472^2 .

It is not an unprimeable number, because it can be changed into a prime (52900051781) 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, 1322501275 + ... + 1322501314.

It is an arithmetic number, because the mean of its divisors is an integer number (9257509065).

Almost surely, 252900051780 is an apocalyptic number.

It is an amenable number.

52900051780 is an abundant number, since it is smaller than the sum of its proper divisors (58190057000).

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

52900051780 is a wasteful number, since it uses less digits than its factorization.

52900051780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645002598 (or 2645002596 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 37.

The spelling of 52900051780 in words is "fifty-two billion, nine hundred million, fifty-one thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 2645002589 5290005178 10580010356 13225012945 26450025890 52900051780