Search a number
-
+
97561 is a prime number
BaseRepresentation
bin10111110100011001
311221211101
4113310121
511110221
62031401
7554302
oct276431
9157741
1097561
1167332
1248561
1335539
14277a9
151dd91
hex17d19

97561 has 2 divisors, whose sum is σ = 97562. Its totient is φ = 97560.

The previous prime is 97553. The next prime is 97571. The reversal of 97561 is 16579.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59536 + 38025 = 244^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 97561 - 23 = 97553 is a prime.

97561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (97501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48780 + 48781.

It is an arithmetic number, because the mean of its divisors is an integer number (48781).

297561 is an apocalyptic number.

It is an amenable number.

97561 is a deficient number, since it is larger than the sum of its proper divisors (1).

97561 is an equidigital number, since it uses as much as digits as its factorization.

97561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 28.

The square root of 97561 is about 312.3475628207. The cubic root of 97561 is about 46.0354169587.

The spelling of 97561 in words is "ninety-seven thousand, five hundred sixty-one".