100447801 has 2 divisors, whose sum is σ = 100447802. Its totient is φ = 100447800.

The previous prime is 100447799. The next prime is 100447811. The reversal of 100447801 is 108744001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96138025 + 4309776 = 9805^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 100447801 - 2¹ = 100447799 is a prime.

Together with 100447799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100447811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50223900 + 50223901.

It is an arithmetic number, because the mean of its divisors is an integer number (50223901).

Almost surely, 2^100447801 is an apocalyptic number.

It is an amenable number.

100447801 is a deficient number, since it is larger than the sum of its proper divisors (1).

100447801 is an equidigital number, since it uses as much as digits as its factorization.

100447801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 100447801 is about 10022.3650402487. The cubic root of 100447801 is about 464.8506877913.

The spelling of 100447801 in words is "one hundred million, four hundred forty-seven thousand, eight hundred one".