53620140 has 96 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 11966976.

The previous prime is 53620129. The next prime is 53620163. The reversal of 53620140 is 4102635.

It is a happy number.

53620140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 16576 + ... + 19544.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^53620140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53620140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87816960).

53620140 is an abundant number, since it is smaller than the sum of its proper divisors (122013780).

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

53620140 is a wasteful number, since it uses less digits than its factorization.

53620140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 53620140 is about 7322.5774150909. The cubic root of 53620140 is about 377.0879441727.

Adding to 53620140 its reverse (4102635), we get a palindrome (57722775).

The spelling of 53620140 in words is "fifty-three million, six hundred twenty thousand, one hundred forty".