Search a number
-
+
30575141 is a prime number
BaseRepresentation
bin111010010100…
…0101000100101
32010112101012122
41310220220211
530311401031
63011155325
7520612232
oct164505045
963471178
1030575141
1116293613
12a2a5b45
1364469cc
1440bc789
152a3e47b
hex1d28a25

30575141 has 2 divisors, whose sum is σ = 30575142. Its totient is φ = 30575140.

The previous prime is 30575087. The next prime is 30575159. The reversal of 30575141 is 14157503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 8579041 = 4690^2 + 2929^2 .

It is an emirp because it is prime and its reverse (14157503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30575141 - 214 = 30558757 is a prime.

It is a Chen prime.

It is equal to p1891313 and since 30575141 and 1891313 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30575141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30575191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15287570 + 15287571.

It is an arithmetic number, because the mean of its divisors is an integer number (15287571).

Almost surely, 230575141 is an apocalyptic number.

It is an amenable number.

30575141 is a deficient number, since it is larger than the sum of its proper divisors (1).

30575141 is an equidigital number, since it uses as much as digits as its factorization.

30575141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 30575141 is about 5529.4792702387. The cubic root of 30575141 is about 312.6963578736.

The spelling of 30575141 in words is "thirty million, five hundred seventy-five thousand, one hundred forty-one".