53020385 has 32 divisors (see below), whose sum is σ = 72520704. Its totient is φ = 37171200.

The previous prime is 53020379. The next prime is 53020403. The reversal of 53020385 is 58302035.

It is not a de Polignac number, because 53020385 - 2⁴ = 53020369 is a prime.

It is a super-2 number, since 2×53020385² = 5622322451096450, which contains 22 as substring.

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 (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206177 + ... + 206433.

It is an arithmetic number, because the mean of its divisors is an integer number (2266272).

Almost surely, 2^53020385 is an apocalyptic number.

53020385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53020385 is a deficient number, since it is larger than the sum of its proper divisors (19500319).

53020385 is a wasteful number, since it uses less digits than its factorization.

53020385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 53020385 is about 7281.5098022320. The cubic root of 53020385 is about 375.6767276675.

The spelling of 53020385 in words is "fifty-three million, twenty thousand, three hundred eighty-five".