775520153 has 2 divisors, whose sum is σ = 775520154. Its totient is φ = 775520152.

The previous prime is 775520143. The next prime is 775520159. The reversal of 775520153 is 351025577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 699708304 + 75811849 = 26452^2 + 8707^2 .

It is a cyclic number.

It is not a de Polignac number, because 775520153 - 2²⁴ = 758742937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (775520159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387760076 + 387760077.

It is an arithmetic number, because the mean of its divisors is an integer number (387760077).

Almost surely, 2^775520153 is an apocalyptic number.

It is an amenable number.

775520153 is a deficient number, since it is larger than the sum of its proper divisors (1).

775520153 is an equidigital number, since it uses as much as digits as its factorization.

775520153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 775520153 is about 27848.1624707987. The cubic root of 775520153 is about 918.7507275790.

The spelling of 775520153 in words is "seven hundred seventy-five million, five hundred twenty thousand, one hundred fifty-three".