Search a number
-
+
87383161 is a prime number
BaseRepresentation
bin1010011010101…
…01110001111001
320002102112011101
411031111301321
5134332230121
612400531401
72110513255
oct515256171
9202375141
1087383161
1145364298
1225320b61
1315146b18
14b869265
157a11491
hex5355c79

87383161 has 2 divisors, whose sum is σ = 87383162. Its totient is φ = 87383160.

The previous prime is 87383143. The next prime is 87383201. The reversal of 87383161 is 16138378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69405561 + 17977600 = 8331^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 87383161 - 211 = 87381113 is a prime.

It is a super-3 number, since 3×873831613 (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87383161.

It is not a weakly prime, because it can be changed into another prime (87383561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43691580 + 43691581.

It is an arithmetic number, because the mean of its divisors is an integer number (43691581).

Almost surely, 287383161 is an apocalyptic number.

It is an amenable number.

87383161 is a deficient number, since it is larger than the sum of its proper divisors (1).

87383161 is an equidigital number, since it uses as much as digits as its factorization.

87383161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 87383161 is about 9347.8960734488. The cubic root of 87383161 is about 443.7543093941.

The spelling of 87383161 in words is "eighty-seven million, three hundred eighty-three thousand, one hundred sixty-one".