53682813 has 24 divisors (see below), whose sum is σ = 79480440. Its totient is φ = 34905600.

The previous prime is 53682803. The next prime is 53682829. The reversal of 53682813 is 31828635.

It can be written as a sum of positive squares in 4 ways, for example, as 34786404 + 18896409 = 5898^2 + 4347^2 .

It is not a de Polignac number, because 53682813 - 2²¹ = 51585661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53682803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65953 + ... + 66761.

It is an arithmetic number, because the mean of its divisors is an integer number (3311685).

Almost surely, 2^53682813 is an apocalyptic number.

It is an amenable number.

53682813 is a deficient number, since it is larger than the sum of its proper divisors (25797627).

53682813 is a wasteful number, since it uses less digits than its factorization.

53682813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 986 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 53682813 is about 7326.8556011430. The cubic root of 53682813 is about 377.2348046057.

The spelling of 53682813 in words is "fifty-three million, six hundred eighty-two thousand, eight hundred thirteen".