4155385 has 8 divisors (see below), whose sum is σ = 5370120. Its totient is φ = 3068544.

The previous prime is 4155367. The next prime is 4155401. The reversal of 4155385 is 5835514.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 4108729 = 216^2 + 2027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4155385 - 2⁷ = 4155257 is a prime.

4155385 is a lucky 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 7 ways as a sum of consecutive naturals, for example, 31900 + ... + 32029.

It is an arithmetic number, because the mean of its divisors is an integer number (671265).

Almost surely, 2^4155385 is an apocalyptic number.

It is an amenable number.

4155385 is a deficient number, since it is larger than the sum of its proper divisors (1214735).

4155385 is a wasteful number, since it uses less digits than its factorization.

4155385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63947.

The product of its digits is 12000, while the sum is 31.

The square root of 4155385 is about 2038.4761465369. The cubic root of 4155385 is about 160.7695351021.

The spelling of 4155385 in words is "four million, one hundred fifty-five thousand, three hundred eighty-five".