556197053897 has 2 divisors, whose sum is σ = 556197053898. Its totient is φ = 556197053896.

The previous prime is 556197053861. The next prime is 556197053899. The reversal of 556197053897 is 798350791655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287661668281 + 268535385616 = 536341^2 + 518204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556197053897 is a prime.

Together with 556197053899, 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 (556197053899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278098526948 + 278098526949.

It is an arithmetic number, because the mean of its divisors is an integer number (278098526949).

Almost surely, 2^556197053897 is an apocalyptic number.

It is an amenable number.

556197053897 is a deficient number, since it is larger than the sum of its proper divisors (1).

556197053897 is an equidigital number, since it uses as much as digits as its factorization.

556197053897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442000, while the sum is 65.

The spelling of 556197053897 in words is "five hundred fifty-six billion, one hundred ninety-seven million, fifty-three thousand, eight hundred ninety-seven".