53220163 has 4 divisors (see below), whose sum is σ = 53527968. Its totient is φ = 52912360.

The previous prime is 53220161. The next prime is 53220169. The reversal of 53220163 is 36102235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53220163 - 2¹ = 53220161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53220161) 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 3 ways as a sum of consecutive naturals, for example, 153643 + ... + 153988.

It is an arithmetic number, because the mean of its divisors is an integer number (13381992).

Almost surely, 2^53220163 is an apocalyptic number.

53220163 is a deficient number, since it is larger than the sum of its proper divisors (307805).

53220163 is a wasteful number, since it uses less digits than its factorization.

53220163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307804.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 53220163 is about 7295.2150756506. The cubic root of 53220163 is about 376.1479796096.

Adding to 53220163 its reverse (36102235), we get a palindrome (89322398).

The spelling of 53220163 in words is "fifty-three million, two hundred twenty thousand, one hundred sixty-three".