85387556 has 12 divisors (see below), whose sum is σ = 151878300. Its totient is φ = 41993760.

The previous prime is 85387553. The next prime is 85387559. The reversal of 85387556 is 65578358.

It is an interprime number because it is at equal distance from previous prime (85387553) and next prime (85387559).

It can be written as a sum of positive squares in 2 ways, for example, as 44222500 + 41165056 = 6650^2 + 6416^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 85387556.

It is not an unprimeable number, because it can be changed into a prime (85387553) 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, 174731 + ... + 175218.

It is an arithmetic number, because the mean of its divisors is an integer number (12656525).

Almost surely, 2^85387556 is an apocalyptic number.

It is an amenable number.

85387556 is a deficient number, since it is larger than the sum of its proper divisors (66490744).

85387556 is a wasteful number, since it uses less digits than its factorization.

85387556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350014 (or 350012 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The square root of 85387556 is about 9240.5387288837. The cubic root of 85387556 is about 440.3501964110.

The spelling of 85387556 in words is "eighty-five million, three hundred eighty-seven thousand, five hundred fifty-six".