53780020 has 24 divisors (see below), whose sum is σ = 129072384. Its totient is φ = 18438816.

The previous prime is 53779997. The next prime is 53780033. The reversal of 53780020 is 2008735.

53780020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 191932 + ... + 192211.

It is an arithmetic number, because the mean of its divisors is an integer number (5378016).

Almost surely, 2^53780020 is an apocalyptic number.

It is an amenable number.

53780020 is an abundant number, since it is smaller than the sum of its proper divisors (75292364).

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

53780020 is a wasteful number, since it uses less digits than its factorization.

53780020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384159 (or 384157 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 53780020 is about 7333.4862105277. The cubic root of 53780020 is about 377.4623619332.

Adding to 53780020 its reverse (2008735), we get a palindrome (55788755).

The spelling of 53780020 in words is "fifty-three million, seven hundred eighty thousand, twenty".