53720064 has 176 divisors, whose sum is σ = 167035200. Its totient is φ = 17031168.

The previous prime is 53720063. The next prime is 53720083. The reversal of 53720064 is 46002735.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53720063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801759 + ... + 801825.

Almost surely, 2^53720064 is an apocalyptic number.

53720064 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53720064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83517600).

53720064 is an abundant number, since it is smaller than the sum of its proper divisors (113315136).

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

53720064 is a wasteful number, since it uses less digits than its factorization.

53720064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53720064 is about 7329.3972467045. The cubic root of 53720064 is about 377.3220400032.

Adding to 53720064 its reverse (46002735), we get a palindrome (99722799).

The spelling of 53720064 in words is "fifty-three million, seven hundred twenty thousand, sixty-four".