775550099 has 2 divisors, whose sum is σ = 775550100. Its totient is φ = 775550098.

The previous prime is 775550093. The next prime is 775550101. The reversal of 775550099 is 990055577.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775550099 is a prime.

Together with 775550101, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (775550093) 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, 387775049 + 387775050.

It is an arithmetic number, because the mean of its divisors is an integer number (387775050).

Almost surely, 2^775550099 is an apocalyptic number.

775550099 is a deficient number, since it is larger than the sum of its proper divisors (1).

775550099 is an equidigital number, since it uses as much as digits as its factorization.

775550099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 496125, while the sum is 47.

The square root of 775550099 is about 27848.7001312449. The cubic root of 775550099 is about 918.7625529992.

The spelling of 775550099 in words is "seven hundred seventy-five million, five hundred fifty thousand, ninety-nine".