65355520 has 36 divisors (see below), whose sum is σ = 156549960. Its totient is φ = 26141696.

The previous prime is 65355491. The next prime is 65355523. The reversal of 65355520 is 2555356.

65355520 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 not an unprimeable number, because it can be changed into a prime (65355523) by changing a digit.

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, 24250 + ... + 26809.

It is an arithmetic number, because the mean of its divisors is an integer number (4348610).

Almost surely, 2^65355520 is an apocalyptic number.

It is an amenable number.

65355520 is an abundant number, since it is smaller than the sum of its proper divisors (91194440).

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

65355520 is an equidigital number, since it uses as much as digits as its factorization.

65355520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51080 (or 51066 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 65355520 is about 8084.2760962253. The cubic root of 65355520 is about 402.8042938953.

The spelling of 65355520 in words is "sixty-five million, three hundred fifty-five thousand, five hundred twenty".