56789897 has 2 divisors, whose sum is σ = 56789898. Its totient is φ = 56789896.

The previous prime is 56789867. The next prime is 56789899. The reversal of 56789897 is 79898765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 7284601 = 7036^2 + 2699^2 .

It is a cyclic number.

It is not a de Polignac number, because 56789897 - 2⁶ = 56789833 is a prime.

Together with 56789899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56789899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28394948 + 28394949.

It is an arithmetic number, because the mean of its divisors is an integer number (28394949).

Almost surely, 2^56789897 is an apocalyptic number.

It is an amenable number.

56789897 is a deficient number, since it is larger than the sum of its proper divisors (1).

56789897 is an equidigital number, since it uses as much as digits as its factorization.

56789897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 59.

The square root of 56789897 is about 7535.9071783031. The cubic root of 56789897 is about 384.3766761951.

The spelling of 56789897 in words is "fifty-six million, seven hundred eighty-nine thousand, eight hundred ninety-seven".