85770001 has 2 divisors, whose sum is σ = 85770002. Its totient is φ = 85770000.

The previous prime is 85769989. The next prime is 85770043. The reversal of 85770001 is 10007758.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84916225 + 853776 = 9215^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 85770001 - 2⁵ = 85769969 is a prime.

It is not a weakly prime, because it can be changed into another prime (85774001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42885000 + 42885001.

It is an arithmetic number, because the mean of its divisors is an integer number (42885001).

Almost surely, 2^85770001 is an apocalyptic number.

It is an amenable number.

85770001 is a deficient number, since it is larger than the sum of its proper divisors (1).

85770001 is an equidigital number, since it uses as much as digits as its factorization.

85770001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 85770001 is about 9261.2094782485. The cubic root of 85770001 is about 441.0066500781.

Adding to 85770001 its reverse (10007758), we get a palindrome (95777759).

The spelling of 85770001 in words is "eighty-five million, seven hundred seventy thousand, one".