99055777 has 2 divisors, whose sum is σ = 99055778. Its totient is φ = 99055776.

The previous prime is 99055751. The next prime is 99055799. The reversal of 99055777 is 77755099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50069776 + 48986001 = 7076^2 + 6999^2 .

It is a cyclic number.

It is not a de Polignac number, because 99055777 - 2¹¹ = 99053729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99055777.

It is not a weakly prime, because it can be changed into another prime (99055577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49527888 + 49527889.

It is an arithmetic number, because the mean of its divisors is an integer number (49527889).

Almost surely, 2^99055777 is an apocalyptic number.

It is an amenable number.

99055777 is a deficient number, since it is larger than the sum of its proper divisors (1).

99055777 is an equidigital number, since it uses as much as digits as its factorization.

99055777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 694575, while the sum is 49.

The square root of 99055777 is about 9952.6768760972. The cubic root of 99055777 is about 462.6933627315.

The spelling of 99055777 in words is "ninety-nine million, fifty-five thousand, seven hundred seventy-seven".