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51546089 = 721051961
BaseRepresentation
bin1100010010100…
…0011111101001
310120222210221102
43010220133221
5101143433324
65040451145
71164064100
oct304503751
9116883842
1051546089
1127107381
1215319ab5
13a8aa05a
146bbb037
1547d2dae
hex31287e9

51546089 has 6 divisors (see below), whose sum is σ = 59961834. Its totient is φ = 44182320.

The previous prime is 51546043. The next prime is 51546101. The reversal of 51546089 is 98064515.

51546089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35904064 + 15642025 = 5992^2 + 3955^2 .

It is a de Polignac number, because none of the positive numbers 2k-51546089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51546029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 525932 + ... + 526029.

It is an arithmetic number, because the mean of its divisors is an integer number (9993639).

Almost surely, 251546089 is an apocalyptic number.

It is an amenable number.

51546089 is a deficient number, since it is larger than the sum of its proper divisors (8415745).

51546089 is a wasteful number, since it uses less digits than its factorization.

51546089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051975 (or 1051968 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51546089 is about 7179.5605018692. The cubic root of 51546089 is about 372.1618967144.

The spelling of 51546089 in words is "fifty-one million, five hundred forty-six thousand, eighty-nine".

Divisors: 1 7 49 1051961 7363727 51546089