85500001 has 2 divisors, whose sum is σ = 85500002. Its totient is φ = 85500000.

The previous prime is 85499983. The next prime is 85500011. The reversal of 85500001 is 10000558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69889600 + 15610401 = 8360^2 + 3951^2 .

It is a cyclic number.

It is not a de Polignac number, because 85500001 - 2⁵ = 85499969 is a prime.

It is not a weakly prime, because it can be changed into another prime (85500011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42750000 + 42750001.

It is an arithmetic number, because the mean of its divisors is an integer number (42750001).

Almost surely, 2^85500001 is an apocalyptic number.

It is an amenable number.

85500001 is a deficient number, since it is larger than the sum of its proper divisors (1).

85500001 is an equidigital number, since it uses as much as digits as its factorization.

85500001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 85500001 is about 9246.6210585273. The cubic root of 85500001 is about 440.5434074630.

Adding to 85500001 its reverse (10000558), we get a palindrome (95500559).

The spelling of 85500001 in words is "eighty-five million, five hundred thousand, one".