53017385 has 4 divisors (see below), whose sum is σ = 63620868. Its totient is φ = 42413904.

The previous prime is 53017379. The next prime is 53017399. The reversal of 53017385 is 58371035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58371035 = 5 ⋅11674207.

It can be written as a sum of positive squares in 2 ways, for example, as 26091664 + 26925721 = 5108^2 + 5189^2 .

It is a cyclic number.

It is not a de Polignac number, because 53017385 - 2¹⁶ = 52951849 is a prime.

It is a super-2 number, since 2×53017385² = 5621686224476450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5301734 + ... + 5301743.

It is an arithmetic number, because the mean of its divisors is an integer number (15905217).

Almost surely, 2^53017385 is an apocalyptic number.

It is an amenable number.

53017385 is a deficient number, since it is larger than the sum of its proper divisors (10603483).

53017385 is a wasteful number, since it uses less digits than its factorization.

53017385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10603482.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 53017385 is about 7281.3037980845. The cubic root of 53017385 is about 375.6696420189.

The spelling of 53017385 in words is "fifty-three million, seventeen thousand, three hundred eighty-five".