85378544 has 20 divisors (see below), whose sum is σ = 166727424. Its totient is φ = 42352128.

The previous prime is 85378541. The next prime is 85378547. The reversal of 85378544 is 44587358.

It is an interprime number because it is at equal distance from previous prime (85378541) and next prime (85378547).

It is a junction number, because it is equal to n+sod(n) for n = 85378495 and 85378504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85378541) by changing a digit.

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, 18977 + ... + 23040.

Almost surely, 2^85378544 is an apocalyptic number.

It is an amenable number.

85378544 is a deficient number, since it is larger than the sum of its proper divisors (81348880).

85378544 is a wasteful number, since it uses less digits than its factorization.

85378544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42152 (or 42146 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The square root of 85378544 is about 9240.0510821099. The cubic root of 85378544 is about 440.3347040068.

It can be divided in two parts, 853 and 78544, that added together give a palindrome (79397).

The spelling of 85378544 in words is "eighty-five million, three hundred seventy-eight thousand, five hundred forty-four".