55304520 has 32 divisors (see below), whose sum is σ = 165913920. Its totient is φ = 14747840.

The previous prime is 55304461. The next prime is 55304521. The reversal of 55304520 is 2540355.

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 (55304521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230316 + ... + 230555.

It is an arithmetic number, because the mean of its divisors is an integer number (5184810).

Almost surely, 2^55304520 is an apocalyptic number.

It is an amenable number.

55304520 is an abundant number, since it is smaller than the sum of its proper divisors (110609400).

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

55304520 is a wasteful number, since it uses less digits than its factorization.

55304520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460885 (or 460881 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55304520 is about 7436.7008814393. The cubic root of 55304520 is about 380.9958183902.

Adding to 55304520 its reverse (2540355), we get a palindrome (57844875).

The spelling of 55304520 in words is "fifty-five million, three hundred four thousand, five hundred twenty".