85211508 has 12 divisors (see below), whose sum is σ = 198826880. Its totient is φ = 28403832.

The previous prime is 85211479. The next prime is 85211519. The reversal of 85211508 is 80511258.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×85211508² = 14522002191268128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550468 + ... + 3550491.

Almost surely, 2^85211508 is an apocalyptic number.

It is an amenable number.

85211508 is an abundant number, since it is smaller than the sum of its proper divisors (113615372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85211508 is a wasteful number, since it uses less digits than its factorization.

85211508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100966 (or 7100964 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 85211508 is about 9231.0079622975. The cubic root of 85211508 is about 440.0473571617.

The spelling of 85211508 in words is "eighty-five million, two hundred eleven thousand, five hundred eight".