809250157 has 2 divisors, whose sum is σ = 809250158. Its totient is φ = 809250156.

The previous prime is 809250149. The next prime is 809250161. The reversal of 809250157 is 751052908.

809250157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 678810916 + 130439241 = 26054^2 + 11421^2 .

It is a cyclic number.

It is not a de Polignac number, because 809250157 - 2³ = 809250149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809250107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404625078 + 404625079.

It is an arithmetic number, because the mean of its divisors is an integer number (404625079).

Almost surely, 2^809250157 is an apocalyptic number.

It is an amenable number.

809250157 is a deficient number, since it is larger than the sum of its proper divisors (1).

809250157 is an equidigital number, since it uses as much as digits as its factorization.

809250157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 809250157 is about 28447.3224926354. The cubic root of 809250157 is about 931.8820164924.

The spelling of 809250157 in words is "eight hundred nine million, two hundred fifty thousand, one hundred fifty-seven".