53115780 has 24 divisors (see below), whose sum is σ = 148724352. Its totient is φ = 14164192.

The previous prime is 53115737. The next prime is 53115847. The reversal of 53115780 is 8751135.

53115780 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 (30).

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, 442572 + ... + 442691.

It is an arithmetic number, because the mean of its divisors is an integer number (6196848).

Almost surely, 2^53115780 is an apocalyptic number.

It is an amenable number.

53115780 is an abundant number, since it is smaller than the sum of its proper divisors (95608572).

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

53115780 is a wasteful number, since it uses less digits than its factorization.

53115780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885275 (or 885273 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 53115780 is about 7288.0573543298. The cubic root of 53115780 is about 375.9019002414.

The spelling of 53115780 in words is "fifty-three million, one hundred fifteen thousand, seven hundred eighty".