56203297901 has 2 divisors, whose sum is σ = 56203297902. Its totient is φ = 56203297900.

The previous prime is 56203297897. The next prime is 56203297991. The reversal of 56203297901 is 10979230265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41830884676 + 14372413225 = 204526^2 + 119885^2 .

It is a cyclic number.

It is not a de Polignac number, because 56203297901 - 2² = 56203297897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56203297991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28101648950 + 28101648951.

It is an arithmetic number, because the mean of its divisors is an integer number (28101648951).

Almost surely, 2^56203297901 is an apocalyptic number.

It is an amenable number.

56203297901 is a deficient number, since it is larger than the sum of its proper divisors (1).

56203297901 is an equidigital number, since it uses as much as digits as its factorization.

56203297901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 56203297901 in words is "fifty-six billion, two hundred three million, two hundred ninety-seven thousand, nine hundred one".