85520829 has 8 divisors (see below), whose sum is σ = 120735360. Its totient is φ = 53660096.

The previous prime is 85520819. The next prime is 85520839. The reversal of 85520829 is 92802558.

It is an interprime number because it is at equal distance from previous prime (85520819) and next prime (85520839).

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 85520829 - 2⁹ = 85520317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85520819) 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, 838389 + ... + 838490.

It is an arithmetic number, because the mean of its divisors is an integer number (15091920).

Almost surely, 2^85520829 is an apocalyptic number.

It is an amenable number.

85520829 is a deficient number, since it is larger than the sum of its proper divisors (35214531).

85520829 is a wasteful number, since it uses less digits than its factorization.

85520829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676899.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 85520829 is about 9247.7472391929. The cubic root of 85520829 is about 440.5791770264.

The spelling of 85520829 in words is "eighty-five million, five hundred twenty thousand, eight hundred twenty-nine".