55343520 has 192 divisors, whose sum is σ = 202487040. Its totient is φ = 14091264.

The previous prime is 55343507. The next prime is 55343521. The reversal of 55343520 is 2534355.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55343521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99082 + ... + 99638.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^55343520 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 55343520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101243520).

55343520 is an abundant number, since it is smaller than the sum of its proper divisors (147143520).

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

55343520 is a wasteful number, since it uses less digits than its factorization.

55343520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 55343520 is about 7439.3225498025. The cubic root of 55343520 is about 381.0853550473.

Adding to 55343520 its reverse (2534355), we get a palindrome (57877875).

The spelling of 55343520 in words is "fifty-five million, three hundred forty-three thousand, five hundred twenty".