85521141 has 12 divisors (see below), whose sum is σ = 124686432. Its totient is φ = 56480616.

The previous prime is 85521127. The next prime is 85521143. The reversal of 85521141 is 14112558.

It is not a de Polignac number, because 85521141 - 2⁶ = 85521077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85521143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43441 + ... + 45366.

It is an arithmetic number, because the mean of its divisors is an integer number (10390536).

Almost surely, 2^85521141 is an apocalyptic number.

It is an amenable number.

85521141 is a deficient number, since it is larger than the sum of its proper divisors (39165291).

85521141 is a wasteful number, since it uses less digits than its factorization.

85521141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88920 (or 88917 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 85521141 is about 9247.7641081507. The cubic root of 85521141 is about 440.5797128044.

Adding to 85521141 its reverse (14112558), we get a palindrome (99633699).

The spelling of 85521141 in words is "eighty-five million, five hundred twenty-one thousand, one hundred forty-one".