85512577 has 2 divisors, whose sum is σ = 85512578. Its totient is φ = 85512576.

The previous prime is 85512563. The next prime is 85512607. The reversal of 85512577 is 77521558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 13075456 = 8511^2 + 3616^2 .

It is a cyclic number.

It is not a de Polignac number, because 85512577 - 2¹⁵ = 85479809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85512377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42756288 + 42756289.

It is an arithmetic number, because the mean of its divisors is an integer number (42756289).

Almost surely, 2^85512577 is an apocalyptic number.

It is an amenable number.

85512577 is a deficient number, since it is larger than the sum of its proper divisors (1).

85512577 is an equidigital number, since it uses as much as digits as its factorization.

85512577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98000, while the sum is 40.

The square root of 85512577 is about 9247.3010657164. The cubic root of 85512577 is about 440.5650059122.

The spelling of 85512577 in words is "eighty-five million, five hundred twelve thousand, five hundred seventy-seven".