53220352 has 22 divisors (see below), whose sum is σ = 106390778. Its totient is φ = 26609664.

The previous prime is 53220341. The next prime is 53220359. The reversal of 53220352 is 25302235.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 13075456 = 6336^2 + 3616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53220359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24963 + ... + 27010.

Almost surely, 2^53220352 is an apocalyptic number.

It is an amenable number.

53220352 is a deficient number, since it is larger than the sum of its proper divisors (53170426).

53220352 is an equidigital number, since it uses as much as digits as its factorization.

53220352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51993 (or 51975 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 53220352 is about 7295.2280293353. The cubic root of 53220352 is about 376.1484248787.

Adding to 53220352 its reverse (25302235), we get a palindrome (78522587).

The spelling of 53220352 in words is "fifty-three million, two hundred twenty thousand, three hundred fifty-two".