Search a number
-
+
24800081 is a prime number
BaseRepresentation
bin101111010011…
…0101101010001
31201122222022112
41132212231101
522322100311
62243315105
7420540305
oct136465521
951588275
1024800081
1112aa9739
12837ba95
1351a4207
143417d05
15229d28b
hex17a6b51

24800081 has 2 divisors, whose sum is σ = 24800082. Its totient is φ = 24800080.

The previous prime is 24800063. The next prime is 24800123. The reversal of 24800081 is 18000842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 839056 = 4895^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 24800081 - 218 = 24537937 is a prime.

It is a super-2 number, since 2×248000812 = 1230088035213122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24800011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12400040 + 12400041.

It is an arithmetic number, because the mean of its divisors is an integer number (12400041).

Almost surely, 224800081 is an apocalyptic number.

It is an amenable number.

24800081 is a deficient number, since it is larger than the sum of its proper divisors (1).

24800081 is an equidigital number, since it uses as much as digits as its factorization.

24800081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 24800081 is about 4979.9679717846. The cubic root of 24800081 is about 291.6202646545.

The spelling of 24800081 in words is "twenty-four million, eight hundred thousand, eighty-one".