Search a number
-
+
51787 is a prime number
BaseRepresentation
bin1100101001001011
32122001001
430221023
53124122
61035431
7303661
oct145113
978031
1051787
11359aa
1225b77
131a758
1414c31
1510527
hexca4b

51787 has 2 divisors, whose sum is σ = 51788. Its totient is φ = 51786.

The previous prime is 51769. The next prime is 51797. The reversal of 51787 is 78715.

It is a happy number.

51787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51787 - 27 = 51659 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (51767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25893 + 25894.

It is an arithmetic number, because the mean of its divisors is an integer number (25894).

251787 is an apocalyptic number.

51787 is a deficient number, since it is larger than the sum of its proper divisors (1).

51787 is an equidigital number, since it uses as much as digits as its factorization.

51787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1960, while the sum is 28.

The square root of 51787 is about 227.5675723824. The cubic root of 51787 is about 37.2740786920.

Adding to 51787 its sum of digits (28), we get a palindrome (51815).

It can be divided in two parts, 51 and 787, that added together give a palindrome (838).

The spelling of 51787 in words is "fifty-one thousand, seven hundred eighty-seven".