53085831 has 4 divisors (see below), whose sum is σ = 70781112. Its totient is φ = 35390552.

The previous prime is 53085821. The next prime is 53085841. The reversal of 53085831 is 13858035.

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

It is an interprime number because it is at equal distance from previous prime (53085821) and next prime (53085841).

It is a cyclic number.

It is not a de Polignac number, because 53085831 - 2¹⁰ = 53084807 is a prime.

It is a super-2 number, since 2×53085831² = 5636210905921122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53085792 and 53085801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53085811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8847636 + ... + 8847641.

It is an arithmetic number, because the mean of its divisors is an integer number (17695278).

Almost surely, 2^53085831 is an apocalyptic number.

53085831 is a deficient number, since it is larger than the sum of its proper divisors (17695281).

53085831 is a wasteful number, since it uses less digits than its factorization.

53085831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17695280.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 53085831 is about 7286.0024018662. The cubic root of 53085831 is about 375.8312369810.

The spelling of 53085831 in words is "fifty-three million, eighty-five thousand, eight hundred thirty-one".