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56667797 is a prime number
BaseRepresentation
bin1101100000101…
…0111010010101
310221122000121022
43120022322111
5104001332142
65342330525
71255445144
oct330127225
9127560538
1056667797
1129a9539a
1216b89a45
13b981354
14775175b
154e956d2
hex360ae95

56667797 has 2 divisors, whose sum is σ = 56667798. Its totient is φ = 56667796.

The previous prime is 56667773. The next prime is 56667799. The reversal of 56667797 is 79776665.

56667797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38613796 + 18054001 = 6214^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 56667797 - 210 = 56666773 is a prime.

It is a super-2 number, since 2×566677972 = 6422478433666418, which contains 22 as substring.

Together with 56667799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56667799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28333898 + 28333899.

It is an arithmetic number, because the mean of its divisors is an integer number (28333899).

Almost surely, 256667797 is an apocalyptic number.

It is an amenable number.

56667797 is a deficient number, since it is larger than the sum of its proper divisors (1).

56667797 is an equidigital number, since it uses as much as digits as its factorization.

56667797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 53.

The square root of 56667797 is about 7527.8016047183. The cubic root of 56667797 is about 384.1010046982.

The spelling of 56667797 in words is "fifty-six million, six hundred sixty-seven thousand, seven hundred ninety-seven".