85257556 has 12 divisors (see below), whose sum is σ = 149359392. Its totient is φ = 42583448.

The previous prime is 85257547. The next prime is 85257563. The reversal of 85257556 is 65575258.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6910 + ... + 14773.

It is an arithmetic number, because the mean of its divisors is an integer number (12446616).

Almost surely, 2^85257556 is an apocalyptic number.

It is an amenable number.

85257556 is a deficient number, since it is larger than the sum of its proper divisors (64101836).

85257556 is a wasteful number, since it uses less digits than its factorization.

85257556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22670 (or 22668 counting only the distinct ones).

The product of its digits is 420000, while the sum is 43.

The square root of 85257556 is about 9233.5018275842. The cubic root of 85257556 is about 440.1266095702.

The spelling of 85257556 in words is "eighty-five million, two hundred fifty-seven thousand, five hundred fifty-six".