85065401 has 2 divisors, whose sum is σ = 85065402. Its totient is φ = 85065400.

The previous prime is 85065391. The next prime is 85065419. The reversal of 85065401 is 10456058.

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., 57229225 + 27836176 = 7565^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 85065401 - 2¹⁰ = 85064377 is a prime.

It is a super-2 number, since 2×85065401² = 14472244894581602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (85065301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42532700 + 42532701.

It is an arithmetic number, because the mean of its divisors is an integer number (42532701).

Almost surely, 2^85065401 is an apocalyptic number.

It is an amenable number.

85065401 is a deficient number, since it is larger than the sum of its proper divisors (1).

85065401 is an equidigital number, since it uses as much as digits as its factorization.

85065401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 85065401 is about 9223.0906425124. The cubic root of 85065401 is about 439.7957057797.

The spelling of 85065401 in words is "eighty-five million, sixty-five thousand, four hundred one".