85171546 has 4 divisors (see below), whose sum is σ = 127757322. Its totient is φ = 42585772.

The previous prime is 85171543. The next prime is 85171549. The reversal of 85171546 is 64517158.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (85171543) and next prime (85171549).

It can be written as a sum of positive squares in only one way, i.e., 76825225 + 8346321 = 8765^2 + 2889^2 .

It is not an unprimeable number, because it can be changed into a prime (85171543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21292885 + ... + 21292888.

Almost surely, 2^85171546 is an apocalyptic number.

85171546 is a deficient number, since it is larger than the sum of its proper divisors (42585776).

85171546 is a wasteful number, since it uses less digits than its factorization.

85171546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42585775.

The product of its digits is 33600, while the sum is 37.

The square root of 85171546 is about 9228.8431561058. The cubic root of 85171546 is about 439.9785561175.

The spelling of 85171546 in words is "eighty-five million, one hundred seventy-one thousand, five hundred forty-six".