85585531 has 8 divisors (see below), whose sum is σ = 90894960. Its totient is φ = 80306688.

The previous prime is 85585469. The next prime is 85585537. The reversal of 85585531 is 13558558.

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 85585531 - 2²³ = 77196923 is a prime.

It is a super-2 number, since 2×85585531² = 14649766233103922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85585537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1741 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (11361870).

Almost surely, 2^85585531 is an apocalyptic number.

85585531 is a deficient number, since it is larger than the sum of its proper divisors (5309429).

85585531 is a wasteful number, since it uses less digits than its factorization.

85585531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15293.

The product of its digits is 120000, while the sum is 40.

The square root of 85585531 is about 9251.2448351560. The cubic root of 85585531 is about 440.6902578329.

The spelling of 85585531 in words is "eighty-five million, five hundred eighty-five thousand, five hundred thirty-one".