53900640 has 120 divisors (see below), whose sum is σ = 190270080. Its totient is φ = 14370048.

The previous prime is 53900633. The next prime is 53900653. The reversal of 53900640 is 4600935.

It is a happy number.

53900640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 10881 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (1585584).

Almost surely, 2^53900640 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 53900640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95135040).

53900640 is an abundant number, since it is smaller than the sum of its proper divisors (136369440).

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

53900640 is a wasteful number, since it uses less digits than its factorization.

53900640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186 (or 4169 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 53900640 is about 7341.7055239229. The cubic root of 53900640 is about 377.7443471635.

The spelling of 53900640 in words is "fifty-three million, nine hundred thousand, six hundred forty".