53739520 has 76 divisors (see below), whose sum is σ = 132120324. Its totient is φ = 20971520.

The previous prime is 53739493. The next prime is 53739527. The reversal of 53739520 is 2593735.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 44302336 = 3072^2 + 6656^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53739527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310700 + ... + 1310740.

Almost surely, 2^53739520 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 53739520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66060162).

53739520 is an abundant number, since it is smaller than the sum of its proper divisors (78380804).

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

53739520 is an frugal number, since it uses more digits than its factorization.

53739520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 53739520 is about 7330.7243843975. The cubic root of 53739520 is about 377.3675865581.

The spelling of 53739520 in words is "fifty-three million, seven hundred thirty-nine thousand, five hundred twenty".