52200421997 has 2 divisors, whose sum is σ = 52200421998. Its totient is φ = 52200421996.

The previous prime is 52200421993. The next prime is 52200422051. The reversal of 52200421997 is 79912400225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50505370756 + 1695051241 = 224734^2 + 41171^2 .

It is a cyclic number.

It is not a de Polignac number, because 52200421997 - 2² = 52200421993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52200421991) 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, 26100210998 + 26100210999.

It is an arithmetic number, because the mean of its divisors is an integer number (26100210999).

Almost surely, 2^52200421997 is an apocalyptic number.

It is an amenable number.

52200421997 is a deficient number, since it is larger than the sum of its proper divisors (1).

52200421997 is an equidigital number, since it uses as much as digits as its factorization.

52200421997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 52200421997 in words is "fifty-two billion, two hundred million, four hundred twenty-one thousand, nine hundred ninety-seven".