85540512 has 24 divisors (see below), whose sum is σ = 224544096. Its totient is φ = 28513472.

The previous prime is 85540457. The next prime is 85540513. The reversal of 85540512 is 21504558.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 85540512.

It is not an unprimeable number, because it can be changed into a prime (85540513) 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, 445428 + ... + 445619.

It is an arithmetic number, because the mean of its divisors is an integer number (9356004).

Almost surely, 2^85540512 is an apocalyptic number.

It is an amenable number.

85540512 is an abundant number, since it is smaller than the sum of its proper divisors (139003584).

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

85540512 is a wasteful number, since it uses less digits than its factorization.

85540512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891060 (or 891052 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 85540512 is about 9248.8113830913. The cubic root of 85540512 is about 440.6129748542.

The spelling of 85540512 in words is "eighty-five million, five hundred forty thousand, five hundred twelve".