Search a number
-
+
97370281 is a prime number
BaseRepresentation
bin1011100110111…
…00000010101001
320210012220220201
411303130002221
5144411322111
613354552201
72261430241
oct563340251
9223186821
1097370281
114aa65808
1228738661
1317232868
14cd08b21
1588356c1
hex5cdc0a9

97370281 has 2 divisors, whose sum is σ = 97370282. Its totient is φ = 97370280.

The previous prime is 97370279. The next prime is 97370297. The reversal of 97370281 is 18207379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55651600 + 41718681 = 7460^2 + 6459^2 .

It is an emirp because it is prime and its reverse (18207379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97370281 - 21 = 97370279 is a prime.

It is a super-2 number, since 2×973702812 = 18961943244037922, which contains 22 as substring.

Together with 97370279, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97370281.

It is not a weakly prime, because it can be changed into another prime (97370261) 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 as a sum of consecutive naturals, namely, 48685140 + 48685141.

It is an arithmetic number, because the mean of its divisors is an integer number (48685141).

Almost surely, 297370281 is an apocalyptic number.

It is an amenable number.

97370281 is a deficient number, since it is larger than the sum of its proper divisors (1).

97370281 is an equidigital number, since it uses as much as digits as its factorization.

97370281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 97370281 is about 9867.6380659203. The cubic root of 97370281 is about 460.0539964970.

The spelling of 97370281 in words is "ninety-seven million, three hundred seventy thousand, two hundred eighty-one".