85071377 has 2 divisors, whose sum is σ = 85071378. Its totient is φ = 85071376.

The previous prime is 85071373. The next prime is 85071397. The reversal of 85071377 is 77317058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77721856 + 7349521 = 8816^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 85071377 - 2² = 85071373 is a prime.

It is a super-2 number, since 2×85071377² = 14474278369352258, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85071377.

It is not a weakly prime, because it can be changed into another prime (85071373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42535688 + 42535689.

It is an arithmetic number, because the mean of its divisors is an integer number (42535689).

Almost surely, 2^85071377 is an apocalyptic number.

It is an amenable number.

85071377 is a deficient number, since it is larger than the sum of its proper divisors (1).

85071377 is an equidigital number, since it uses as much as digits as its factorization.

85071377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 85071377 is about 9223.4146063158. The cubic root of 85071377 is about 439.8060043561.

It can be divided in two parts, 850 and 71377, that added together give a palindrome (72227).

The spelling of 85071377 in words is "eighty-five million, seventy-one thousand, three hundred seventy-seven".