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51266285 = 571464751
BaseRepresentation
bin1100001110010…
…0001011101101
310120110121010022
43003210023231
5101111010120
65030451525
71161520250
oct303441355
9116417108
1051266285
1126a36134
1215203ba5
13a80c8a5
146b47097
15477a025
hex30e42ed

51266285 has 8 divisors (see below), whose sum is σ = 70308096. Its totient is φ = 35154000.

The previous prime is 51266279. The next prime is 51266381. The reversal of 51266285 is 58266215.

51266285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51266285 - 24 = 51266269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1464751 = 51266285 / (5 + 1 + 2 + 6 + 6 + 2 + 8 + 5).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 732341 + ... + 732410.

It is an arithmetic number, because the mean of its divisors is an integer number (8788512).

Almost surely, 251266285 is an apocalyptic number.

It is an amenable number.

51266285 is a deficient number, since it is larger than the sum of its proper divisors (19041811).

51266285 is a wasteful number, since it uses less digits than its factorization.

51266285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464763.

The product of its digits is 28800, while the sum is 35.

The square root of 51266285 is about 7160.0478350357. The cubic root of 51266285 is about 371.4872811887.

It can be divided in two parts, 5126 and 6285, that added together give a palindrome (11411).

The spelling of 51266285 in words is "fifty-one million, two hundred sixty-six thousand, two hundred eighty-five".

Divisors: 1 5 7 35 1464751 7323755 10253257 51266285