53070720 has 128 divisors (see below), whose sum is σ = 171262080. Its totient is φ = 13977600.

The previous prime is 53070709. The next prime is 53070727. The reversal of 53070720 is 2707035.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53070727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251415 + ... + 251625.

It is an arithmetic number, because the mean of its divisors is an integer number (1337985).

Almost surely, 2^53070720 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 53070720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85631040).

53070720 is an abundant number, since it is smaller than the sum of its proper divisors (118191360).

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

53070720 is a wasteful number, since it uses less digits than its factorization.

53070720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 53070720 is about 7284.9653396567. The cubic root of 53070720 is about 375.7955731974.

Adding to 53070720 its reverse (2707035), we get a palindrome (55777755).

The spelling of 53070720 in words is "fifty-three million, seventy thousand, seven hundred twenty".