53220304 has 40 divisors (see below), whose sum is σ = 108247040. Its totient is φ = 25315200.

The previous prime is 53220289. The next prime is 53220313. The reversal of 53220304 is 40302235.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29377 + ... + 31135.

It is an arithmetic number, because the mean of its divisors is an integer number (2706176).

Almost surely, 2^53220304 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 53220304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54123520).

53220304 is an abundant number, since it is smaller than the sum of its proper divisors (55026736).

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

53220304 is a wasteful number, since it uses less digits than its factorization.

53220304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 53220304 is about 7295.2247395128. The cubic root of 53220304 is about 376.1483117946.

Adding to 53220304 its reverse (40302235), we get a palindrome (93522539).

The spelling of 53220304 in words is "fifty-three million, two hundred twenty thousand, three hundred four".