95550821 has 2 divisors, whose sum is σ = 95550822. Its totient is φ = 95550820.

The previous prime is 95550803. The next prime is 95550823. The reversal of 95550821 is 12805559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95550625 + 196 = 9775^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 95550821 - 2¹⁴ = 95534437 is a prime.

It is a Sophie Germain prime.

Together with 95550823, 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 (95550823) 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, 47775410 + 47775411.

It is an arithmetic number, because the mean of its divisors is an integer number (47775411).

Almost surely, 2^95550821 is an apocalyptic number.

It is an amenable number.

95550821 is a deficient number, since it is larger than the sum of its proper divisors (1).

95550821 is an equidigital number, since it uses as much as digits as its factorization.

95550821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 95550821 is about 9775.0100255703. The cubic root of 95550821 is about 457.1704391979.

The spelling of 95550821 in words is "ninety-five million, five hundred fifty thousand, eight hundred twenty-one".