85508558 has 8 divisors (see below), whose sum is σ = 128333352. Its totient is φ = 42730776.

The previous prime is 85508551. The next prime is 85508587. The reversal of 85508558 is 85580558.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85508551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6785 + ... + 14732.

It is an arithmetic number, because the mean of its divisors is an integer number (16041669).

Almost surely, 2^85508558 is an apocalyptic number.

85508558 is a deficient number, since it is larger than the sum of its proper divisors (42824794).

85508558 is a wasteful number, since it uses less digits than its factorization.

85508558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23506.

The product of its (nonzero) digits is 320000, while the sum is 44.

The square root of 85508558 is about 9247.0837565148. The cubic root of 85508558 is about 440.5581037755.

The spelling of 85508558 in words is "eighty-five million, five hundred eight thousand, five hundred fifty-eight".