53452720 has 20 divisors (see below), whose sum is σ = 124277760. Its totient is φ = 21381056.

The previous prime is 53452699. The next prime is 53452727. The reversal of 53452720 is 2725435.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (53452727) 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, 334000 + ... + 334159.

It is an arithmetic number, because the mean of its divisors is an integer number (6213888).

Almost surely, 2^53452720 is an apocalyptic number.

It is an amenable number.

53452720 is an abundant number, since it is smaller than the sum of its proper divisors (70825040).

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

53452720 is a wasteful number, since it uses less digits than its factorization.

53452720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668172 (or 668166 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 53452720 is about 7311.1367105259. The cubic root of 53452720 is about 376.6950701252.

The spelling of 53452720 in words is "fifty-three million, four hundred fifty-two thousand, seven hundred twenty".