801515101 has 2 divisors, whose sum is σ = 801515102. Its totient is φ = 801515100.

The previous prime is 801515089. The next prime is 801515123. The reversal of 801515101 is 101515108.

It is an a-pointer prime, because the next prime (801515123) can be obtained adding 801515101 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 696432100 + 105083001 = 26390^2 + 10251^2 .

It is a cyclic number.

It is not a de Polignac number, because 801515101 - 2⁵ = 801515069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801515501) 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, 400757550 + 400757551.

It is an arithmetic number, because the mean of its divisors is an integer number (400757551).

Almost surely, 2^801515101 is an apocalyptic number.

It is an amenable number.

801515101 is a deficient number, since it is larger than the sum of its proper divisors (1).

801515101 is an equidigital number, since it uses as much as digits as its factorization.

801515101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 22.

The square root of 801515101 is about 28311.0420331008. The cubic root of 801515101 is about 928.9034368061.

The spelling of 801515101 in words is "eight hundred one million, five hundred fifteen thousand, one hundred one".