85557288 has 32 divisors (see below), whose sum is σ = 214120800. Its totient is φ = 28488768.

The previous prime is 85557271. The next prime is 85557299. The reversal of 85557288 is 88275558.

It is a happy 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, 40318 + ... + 42386.

It is an arithmetic number, because the mean of its divisors is an integer number (6691275).

Almost surely, 2^85557288 is an apocalyptic number.

It is an amenable number.

85557288 is an abundant number, since it is smaller than the sum of its proper divisors (128563512).

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

85557288 is a wasteful number, since it uses less digits than its factorization.

85557288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801 (or 3797 counting only the distinct ones).

The product of its digits is 896000, while the sum is 48.

The square root of 85557288 is about 9249.7182659798. The cubic root of 85557288 is about 440.6417769579.

The spelling of 85557288 in words is "eighty-five million, five hundred fifty-seven thousand, two hundred eighty-eight".