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51826 = 225913
BaseRepresentation
bin1100101001110010
32122002111
430221302
53124301
61035534
7304045
oct145162
978074
1051826
1135a35
1225baa
131a788
1414c5c
1510551
hexca72

51826 has 4 divisors (see below), whose sum is σ = 77742. Its totient is φ = 25912.

The previous prime is 51817. The next prime is 51827. The reversal of 51826 is 62815.

It is a happy number.

51826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42025 + 9801 = 205^2 + 99^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 51797 and 51806.

It is not an unprimeable number, because it can be changed into a prime (51827) by changing a digit.

51826 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12955 + ... + 12958.

251826 is an apocalyptic number.

51826 is a deficient number, since it is larger than the sum of its proper divisors (25916).

51826 is a wasteful number, since it uses less digits than its factorization.

51826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25915.

The product of its digits is 480, while the sum is 22.

The square root of 51826 is about 227.6532450900. The cubic root of 51826 is about 37.2834331909.

The spelling of 51826 in words is "fifty-one thousand, eight hundred twenty-six".

Divisors: 1 2 25913 51826