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56197 is a prime number
BaseRepresentation
bin1101101110000101
32212002101
431232011
53244242
61112101
7322561
oct155605
985071
1056197
1139249
1228631
131c76b
14166a1
15119b7
hexdb85

56197 has 2 divisors, whose sum is σ = 56198. Its totient is φ = 56196.

The previous prime is 56179. The next prime is 56207. The reversal of 56197 is 79165.

It is a happy number.

Together with previous prime (56179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30276 + 25921 = 174^2 + 161^2 .

56197 is a truncatable prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-56197 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28098 + 28099.

It is an arithmetic number, because the mean of its divisors is an integer number (28099).

256197 is an apocalyptic number.

It is an amenable number.

56197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56197 is an equidigital number, since it uses as much as digits as its factorization.

56197 is an odious number, because the sum of its binary digits is odd.

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

The square root of 56197 is about 237.0590643700. The cubic root of 56197 is about 38.3034339419.

Subtracting from 56197 its sum of digits (28), we obtain a square (56169 = 2372).

It can be divided in two parts, 56 and 197, that added together give a triangular number (253 = T22).

The spelling of 56197 in words is "fifty-six thousand, one hundred ninety-seven".