53618140 has 12 divisors (see below), whose sum is σ = 112598136. Its totient is φ = 21447248.

The previous prime is 53618107. The next prime is 53618177. The reversal of 53618140 is 4181635.

53618140 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 = 53618099 and 53618108.

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, 1340434 + ... + 1340473.

It is an arithmetic number, because the mean of its divisors is an integer number (9383178).

Almost surely, 2^53618140 is an apocalyptic number.

It is an amenable number.

53618140 is an abundant number, since it is smaller than the sum of its proper divisors (58979996).

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

53618140 is a wasteful number, since it uses less digits than its factorization.

53618140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680916 (or 2680914 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 53618140 is about 7322.4408498806. The cubic root of 53618140 is about 377.0832557275.

Adding to 53618140 its reverse (4181635), we get a palindrome (57799775).

The spelling of 53618140 in words is "fifty-three million, six hundred eighteen thousand, one hundred forty".