85405524 has 24 divisors (see below), whose sum is σ = 199473120. Its totient is φ = 28440864.

The previous prime is 85405519. The next prime is 85405559. The reversal of 85405524 is 42550458.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12282 + ... + 17934.

It is an arithmetic number, because the mean of its divisors is an integer number (8311380).

Almost surely, 2^85405524 is an apocalyptic number.

It is an amenable number.

85405524 is an abundant number, since it is smaller than the sum of its proper divisors (114067596).

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

85405524 is a wasteful number, since it uses less digits than its factorization.

85405524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919 (or 6917 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 85405524 is about 9241.5109154294. The cubic root of 85405524 is about 440.3810816976.

The spelling of 85405524 in words is "eighty-five million, four hundred five thousand, five hundred twenty-four".