53806840 has 32 divisors (see below), whose sum is σ = 122730480. Its totient is φ = 21226752.

The previous prime is 53806817. The next prime is 53806847. The reversal of 53806840 is 4860835.

53806840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 53806796 and 53806805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53806847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6294 + ... + 12133.

Almost surely, 2^53806840 is an apocalyptic number.

It is an amenable number.

53806840 is an abundant number, since it is smaller than the sum of its proper divisors (68923640).

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

53806840 is a wasteful number, since it uses less digits than its factorization.

53806840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18511 (or 18507 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 53806840 is about 7335.3145808479. The cubic root of 53806840 is about 377.5250981076.

The spelling of 53806840 in words is "fifty-three million, eight hundred six thousand, eight hundred forty".