85752449 has 8 divisors (see below), whose sum is σ = 90773760. Its totient is φ = 80868816.

The previous prime is 85752439. The next prime is 85752473. The reversal of 85752449 is 94425758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85752449 - 2¹² = 85748353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85752439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33137 + ... + 35630.

It is an arithmetic number, because the mean of its divisors is an integer number (11346720).

Almost surely, 2^85752449 is an apocalyptic number.

It is an amenable number.

85752449 is a deficient number, since it is larger than the sum of its proper divisors (5021311).

85752449 is a wasteful number, since it uses less digits than its factorization.

85752449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68839.

The product of its digits is 403200, while the sum is 44.

The square root of 85752449 is about 9260.2618213526. The cubic root of 85752449 is about 440.9765654459.

The spelling of 85752449 in words is "eighty-five million, seven hundred fifty-two thousand, four hundred forty-nine".