85101901 has 2 divisors, whose sum is σ = 85101902. Its totient is φ = 85101900.

The previous prime is 85101871. The next prime is 85101911. The reversal of 85101901 is 10910158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56265001 + 28836900 = 7501^2 + 5370^2 .

It is a cyclic number.

It is not a de Polignac number, because 85101901 - 2⁹ = 85101389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85101911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42550950 + 42550951.

It is an arithmetic number, because the mean of its divisors is an integer number (42550951).

Almost surely, 2^85101901 is an apocalyptic number.

It is an amenable number.

85101901 is a deficient number, since it is larger than the sum of its proper divisors (1).

85101901 is an equidigital number, since it uses as much as digits as its factorization.

85101901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 85101901 is about 9225.0691596324. The cubic root of 85101901 is about 439.8585995362.

The spelling of 85101901 in words is "eighty-five million, one hundred one thousand, nine hundred one".