95217821 has 2 divisors, whose sum is σ = 95217822. Its totient is φ = 95217820.

The previous prime is 95217803. The next prime is 95217823. The reversal of 95217821 is 12871259.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81631225 + 13586596 = 9035^2 + 3686^2 .

It is an emirp because it is prime and its reverse (12871259) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 95217821 - 2⁶ = 95217757 is a prime.

Together with 95217823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (95217823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47608910 + 47608911.

It is an arithmetic number, because the mean of its divisors is an integer number (47608911).

Almost surely, 2^95217821 is an apocalyptic number.

It is an amenable number.

95217821 is a deficient number, since it is larger than the sum of its proper divisors (1).

95217821 is an equidigital number, since it uses as much as digits as its factorization.

95217821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 95217821 is about 9757.9619285996. The cubic root of 95217821 is about 456.6387327885.

The spelling of 95217821 in words is "ninety-five million, two hundred seventeen thousand, eight hundred twenty-one".