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30125441 = 33789393
BaseRepresentation
bin111001011101…
…0110110000001
32002200112100002
41302322312001
530203003231
62553405345
7514030163
oct162726601
962615302
1030125441
1116006765
12a109855
13631a108
144002933
1529a10cb
hex1cbad81

30125441 has 4 divisors (see below), whose sum is σ = 30215172. Its totient is φ = 30035712.

The previous prime is 30125429. The next prime is 30125453. The reversal of 30125441 is 14452103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14452103 = 19760637.

It is an interprime number because it is at equal distance from previous prime (30125429) and next prime (30125453).

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 24049216 = 2465^2 + 4904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30125441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30125471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44360 + ... + 45033.

It is an arithmetic number, because the mean of its divisors is an integer number (7553793).

Almost surely, 230125441 is an apocalyptic number.

It is an amenable number.

30125441 is a deficient number, since it is larger than the sum of its proper divisors (89731).

30125441 is an equidigital number, since it uses as much as digits as its factorization.

30125441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89730.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30125441 is about 5488.6647738772. The cubic root of 30125441 is about 311.1557309822.

Adding to 30125441 its reverse (14452103), we get a palindrome (44577544).

It can be divided in two parts, 301 and 25441, that multiplied together give a triangular number (7657741 = T3913).

The spelling of 30125441 in words is "thirty million, one hundred twenty-five thousand, four hundred forty-one".

Divisors: 1 337 89393 30125441