53520640 has 36 divisors (see below), whose sum is σ = 128201724. Its totient is φ = 21407744.

The previous prime is 53520629. The next prime is 53520647. The reversal of 53520640 is 4602535.

It can be written as a sum of positive squares in 2 ways, for example, as 11943936 + 41576704 = 3456^2 + 6448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53520647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19627 + ... + 22186.

It is an arithmetic number, because the mean of its divisors is an integer number (3561159).

Almost surely, 2^53520640 is an apocalyptic number.

It is an amenable number.

53520640 is an abundant number, since it is smaller than the sum of its proper divisors (74681084).

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

53520640 is an equidigital number, since it uses as much as digits as its factorization.

53520640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41834 (or 41820 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53520640 is about 7315.7802044621. The cubic root of 53520640 is about 376.8545525000.

The spelling of 53520640 in words is "fifty-three million, five hundred twenty thousand, six hundred forty".