850123801 has 2 divisors, whose sum is σ = 850123802. Its totient is φ = 850123800.

The previous prime is 850123727. The next prime is 850123837. The reversal of 850123801 is 108321058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661775625 + 188348176 = 25725^2 + 13724^2 .

It is a cyclic number.

It is not a de Polignac number, because 850123801 - 2¹⁷ = 849992729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 850123801.

It is not a weakly prime, because it can be changed into another prime (850123501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425061900 + 425061901.

It is an arithmetic number, because the mean of its divisors is an integer number (425061901).

Almost surely, 2^850123801 is an apocalyptic number.

It is an amenable number.

850123801 is a deficient number, since it is larger than the sum of its proper divisors (1).

850123801 is an equidigital number, since it uses as much as digits as its factorization.

850123801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 850123801 is about 29156.8825665571. The cubic root of 850123801 is about 947.3142242690.

Adding to 850123801 its reverse (108321058), we get a palindrome (958444859).

The spelling of 850123801 in words is "eight hundred fifty million, one hundred twenty-three thousand, eight hundred one".