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51132760 = 2357182617
BaseRepresentation
bin1100001100001…
…1100101011000
310120012210221221
43003003211120
5101042222020
65023541424
71160423050
oct303034530
9116183857
1051132760
1126954888
121515a874
13a793b93
146b10560
1547506aa
hex30c3958

51132760 has 32 divisors (see below), whose sum is σ = 131484960. Its totient is φ = 17531136.

The previous prime is 51132751. The next prime is 51132761. The reversal of 51132760 is 6723115.

It is a super-2 number, since 2×511327602 = 5229118290435200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51132761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91029 + ... + 91588.

It is an arithmetic number, because the mean of its divisors is an integer number (4108905).

Almost surely, 251132760 is an apocalyptic number.

It is an amenable number.

51132760 is an abundant number, since it is smaller than the sum of its proper divisors (80352200).

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

51132760 is a wasteful number, since it uses less digits than its factorization.

51132760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182635 (or 182631 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 51132760 is about 7150.7174465224. The cubic root of 51132760 is about 371.1644831691.

Adding to 51132760 its reverse (6723115), we get a palindrome (57855875).

The spelling of 51132760 in words is "fifty-one million, one hundred thirty-two thousand, seven hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 182617 365234 730468 913085 1278319 1460936 1826170 2556638 3652340 5113276 6391595 7304680 10226552 12783190 25566380 51132760