54387685 has 12 divisors (see below), whose sum is σ = 71738604. Its totient is φ = 39554240.

The previous prime is 54387679. The next prime is 54387713. The reversal of 54387685 is 58678345.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 40564161 = 3718^2 + 6369^2 .

It is not a de Polignac number, because 54387685 - 2¹⁵ = 54354917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44344 + ... + 45553.

It is an arithmetic number, because the mean of its divisors is an integer number (5978217).

Almost surely, 2^54387685 is an apocalyptic number.

54387685 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54387685 is a deficient number, since it is larger than the sum of its proper divisors (17350919).

54387685 is a wasteful number, since it uses less digits than its factorization.

54387685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89924 (or 89913 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 54387685 is about 7374.8006752725. The cubic root of 54387685 is about 378.8787005392.

The spelling of 54387685 in words is "fifty-four million, three hundred eighty-seven thousand, six hundred eighty-five".