95810021 has 2 divisors, whose sum is σ = 95810022. Its totient is φ = 95810020.

The previous prime is 95810009. The next prime is 95810023. The reversal of 95810021 is 12001859.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95277121 + 532900 = 9761^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 95810021 - 2⁶ = 95809957 is a prime.

It is a Sophie Germain prime.

Together with 95810023, it forms a pair of twin primes.

It is a Chen 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 (95810023) 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, 47905010 + 47905011.

It is an arithmetic number, because the mean of its divisors is an integer number (47905011).

Almost surely, 2^95810021 is an apocalyptic number.

It is an amenable number.

95810021 is a deficient number, since it is larger than the sum of its proper divisors (1).

95810021 is an equidigital number, since it uses as much as digits as its factorization.

95810021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 95810021 is about 9788.2593447456. The cubic root of 95810021 is about 457.5834535768.

The spelling of 95810021 in words is "ninety-five million, eight hundred ten thousand, twenty-one".