Search a number
-
+
87101369 is a prime number
BaseRepresentation
bin1010011000100…
…00111110111001
320001220012121122
411030100332321
5134244220434
612350515025
72105230565
oct514207671
9201805548
1087101369
1145191603
1225205a75
1315078794
14b7d46a5
1579a7c2e
hex5310fb9

87101369 has 2 divisors, whose sum is σ = 87101370. Its totient is φ = 87101368.

The previous prime is 87101323. The next prime is 87101389. The reversal of 87101369 is 96310178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55875625 + 31225744 = 7475^2 + 5588^2 .

It is a cyclic number.

It is not a de Polignac number, because 87101369 - 224 = 70324153 is a prime.

It is a super-2 number, since 2×871013692 = 15173296963348322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87101389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43550684 + 43550685.

It is an arithmetic number, because the mean of its divisors is an integer number (43550685).

Almost surely, 287101369 is an apocalyptic number.

It is an amenable number.

87101369 is a deficient number, since it is larger than the sum of its proper divisors (1).

87101369 is an equidigital number, since it uses as much as digits as its factorization.

87101369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 87101369 is about 9332.8114199313. The cubic root of 87101369 is about 443.2767914901.

The spelling of 87101369 in words is "eighty-seven million, one hundred one thousand, three hundred sixty-nine".