53857638 has 24 divisors (see below), whose sum is σ = 118006200. Its totient is φ = 17750304.

The previous prime is 53857631. The next prime is 53857673. The reversal of 53857638 is 83675835.

53857638 is a `hidden beast` number, since 5 + 3 + 8 + 5 + 7 + 638 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53857593 and 53857602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53857631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15208 + ... + 18411.

It is an arithmetic number, because the mean of its divisors is an integer number (4916925).

Almost surely, 2^53857638 is an apocalyptic number.

53857638 is an abundant number, since it is smaller than the sum of its proper divisors (64148562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53857638 is a wasteful number, since it uses less digits than its factorization.

53857638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33716 (or 33713 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 53857638 is about 7338.7763285169. The cubic root of 53857638 is about 377.6438654617.

The spelling of 53857638 in words is "fifty-three million, eight hundred fifty-seven thousand, six hundred thirty-eight".