56001100997 has 2 divisors, whose sum is σ = 56001100998. Its totient is φ = 56001100996.

The previous prime is 56001100993. The next prime is 56001101003. The reversal of 56001100997 is 79900110065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54308107681 + 1692993316 = 233041^2 + 41146^2 .

It is a cyclic number.

It is not a de Polignac number, because 56001100997 - 2² = 56001100993 is a prime.

It is a super-2 number, since 2×56001100997² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56001100997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56001100993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000550498 + 28000550499.

It is an arithmetic number, because the mean of its divisors is an integer number (28000550499).

Almost surely, 2^56001100997 is an apocalyptic number.

It is an amenable number.

56001100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

56001100997 is an equidigital number, since it uses as much as digits as its factorization.

56001100997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 38.

The spelling of 56001100997 in words is "fifty-six billion, one million, one hundred thousand, nine hundred ninety-seven".