53161285 has 4 divisors (see below), whose sum is σ = 63793548. Its totient is φ = 42529024.

The previous prime is 53161253. The next prime is 53161307. The reversal of 53161285 is 58216135.

53161285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25462116 + 27699169 = 5046^2 + 5263^2 .

It is a cyclic number.

It is not a de Polignac number, because 53161285 - 2⁵ = 53161253 is a prime.

It is a super-2 number, since 2×53161285² = 5652244445702450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5316124 + ... + 5316133.

It is an arithmetic number, because the mean of its divisors is an integer number (15948387).

Almost surely, 2^53161285 is an apocalyptic number.

It is an amenable number.

53161285 is a deficient number, since it is larger than the sum of its proper divisors (10632263).

53161285 is a wasteful number, since it uses less digits than its factorization.

53161285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632262.

The product of its digits is 7200, while the sum is 31.

The square root of 53161285 is about 7291.1785741401. The cubic root of 53161285 is about 376.0092163314.

It can be divided in two parts, 531 and 61285, that added together give a palindrome (61816).

The spelling of 53161285 in words is "fifty-three million, one hundred sixty-one thousand, two hundred eighty-five".