Search a number
-
+
51000841 is a prime number
BaseRepresentation
bin1100001010001…
…1011000001001
310112222010000001
43002203120021
5101024011331
65021043001
71156333333
oct302433011
9115863001
1051000841
1126874761
12150b6461
13a748b18
146ab8453
154726561
hex30a3609

51000841 has 2 divisors, whose sum is σ = 51000842. Its totient is φ = 51000840.

The previous prime is 51000751. The next prime is 51000847. The reversal of 51000841 is 14800015.

It is the 2916-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26050816 + 24950025 = 5104^2 + 4995^2 .

It is a cyclic number.

It is not a de Polignac number, because 51000841 - 27 = 51000713 is a prime.

It is not a weakly prime, because it can be changed into another prime (51000847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500420 + 25500421.

It is an arithmetic number, because the mean of its divisors is an integer number (25500421).

Almost surely, 251000841 is an apocalyptic number.

It is an amenable number.

51000841 is a deficient number, since it is larger than the sum of its proper divisors (1).

51000841 is an equidigital number, since it uses as much as digits as its factorization.

51000841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 51000841 is about 7141.4873100776. The cubic root of 51000841 is about 370.8450153399.

Adding to 51000841 its reverse (14800015), we get a palindrome (65800856).

The spelling of 51000841 in words is "fifty-one million, eight hundred forty-one", and thus it is an aban number.