56897321069 has 2 divisors, whose sum is σ = 56897321070. Its totient is φ = 56897321068.

The previous prime is 56897321057. The next prime is 56897321071. The reversal of 56897321069 is 96012379865.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56763062500 + 134258569 = 238250^2 + 11587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56897321069 is a prime.

It is a super-2 number, since 2×56897321069² (a number of 22 digits) contains 22 as substring.

Together with 56897321071, 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 (56897321269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28448660534 + 28448660535.

It is an arithmetic number, because the mean of its divisors is an integer number (28448660535).

Almost surely, 2^56897321069 is an apocalyptic number.

It is an amenable number.

56897321069 is a deficient number, since it is larger than the sum of its proper divisors (1).

56897321069 is an equidigital number, since it uses as much as digits as its factorization.

56897321069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 56897321069 in words is "fifty-six billion, eight hundred ninety-seven million, three hundred twenty-one thousand, sixty-nine".