[go: up one dir, main page]

Search a number
-
+
30520541 is a prime number
BaseRepresentation
bin111010001101…
…1010011011101
32010102121022102
41310123103131
530303124131
63010054445
7520264112
oct164332335
963377272
1030520541
1116256597
12a27a425
136427bbc
1440a6909
152a2d1cb
hex1d1b4dd

30520541 has 2 divisors, whose sum is σ = 30520542. Its totient is φ = 30520540.

The previous prime is 30520537. The next prime is 30520561. The reversal of 30520541 is 14502503.

It is an a-pointer prime, because the next prime (30520561) can be obtained adding 30520541 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 7958041 = 4750^2 + 2821^2 .

It is a cyclic number.

It is not a de Polignac number, because 30520541 - 22 = 30520537 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30520561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15260270 + 15260271.

It is an arithmetic number, because the mean of its divisors is an integer number (15260271).

Almost surely, 230520541 is an apocalyptic number.

It is an amenable number.

30520541 is a deficient number, since it is larger than the sum of its proper divisors (1).

30520541 is an equidigital number, since it uses as much as digits as its factorization.

30520541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 30520541 is about 5524.5398903438. The cubic root of 30520541 is about 312.5101129527.

The spelling of 30520541 in words is "thirty million, five hundred twenty thousand, five hundred forty-one".