53542320 has 120 divisors (see below), whose sum is σ = 180123888. Its totient is φ = 13079040.

The previous prime is 53542319. The next prime is 53542327. The reversal of 53542320 is 2324535.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is not an unprimeable number, because it can be changed into a prime (53542327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408655 + ... + 408785.

Almost surely, 2^53542320 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 53542320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90061944).

53542320 is an abundant number, since it is smaller than the sum of its proper divisors (126581568).

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

53542320 is a wasteful number, since it uses less digits than its factorization.

53542320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53542320 is about 7317.2617829349. The cubic root of 53542320 is about 376.9054307142.

Adding to 53542320 its reverse (2324535), we get a palindrome (55866855).

The spelling of 53542320 in words is "fifty-three million, five hundred forty-two thousand, three hundred twenty".