53221763 has 16 divisors (see below), whose sum is σ = 61906944. Its totient is φ = 44815680.

The previous prime is 53221711. The next prime is 53221771. The reversal of 53221763 is 36712235.

It is not a de Polignac number, because 53221763 - 2⁸ = 53221507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53221703) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 116231 + ... + 116687.

It is an arithmetic number, because the mean of its divisors is an integer number (3869184).

Almost surely, 2^53221763 is an apocalyptic number.

53221763 is a deficient number, since it is larger than the sum of its proper divisors (8685181).

53221763 is a wasteful number, since it uses less digits than its factorization.

53221763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its digits is 7560, while the sum is 29.

The square root of 53221763 is about 7295.3247357469. The cubic root of 53221763 is about 376.1517490502.

Adding to 53221763 its reverse (36712235), we get a palindrome (89933998).

The spelling of 53221763 in words is "fifty-three million, two hundred twenty-one thousand, seven hundred sixty-three".