82585161 has 6 divisors (see below), whose sum is σ = 119289690. Its totient is φ = 55056768.

The previous prime is 82585103. The next prime is 82585163. The reversal of 82585161 is 16158528.

It can be written as a sum of positive squares in only one way, i.e., 79762761 + 2822400 = 8931^2 + 1680^2 .

It is not a de Polignac number, because 82585161 - 2¹⁰ = 82584137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82585163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4588056 + ... + 4588073.

It is an arithmetic number, because the mean of its divisors is an integer number (19881615).

Almost surely, 2^82585161 is an apocalyptic number.

It is an amenable number.

82585161 is a deficient number, since it is larger than the sum of its proper divisors (36704529).

82585161 is a wasteful number, since it uses less digits than its factorization.

82585161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176135 (or 9176132 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 82585161 is about 9087.6378118849. The cubic root of 82585161 is about 435.4791232930.

The spelling of 82585161 in words is "eighty-two million, five hundred eighty-five thousand, one hundred sixty-one".