85053971 has 4 divisors (see below), whose sum is σ = 85251744. Its totient is φ = 84856200.

The previous prime is 85053901. The next prime is 85053989. The reversal of 85053971 is 17935058.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85053971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85053901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98240 + ... + 99101.

It is an arithmetic number, because the mean of its divisors is an integer number (21312936).

Almost surely, 2^85053971 is an apocalyptic number.

85053971 is a deficient number, since it is larger than the sum of its proper divisors (197773).

85053971 is a wasteful number, since it uses less digits than its factorization.

85053971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197772.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 85053971 is about 9222.4709812501. The cubic root of 85053971 is about 439.7760068577.

The spelling of 85053971 in words is "eighty-five million, fifty-three thousand, nine hundred seventy-one".