53221169 has 8 divisors (see below), whose sum is σ = 57416040. Its totient is φ = 49144576.

The previous prime is 53221151. The next prime is 53221171. The reversal of 53221169 is 96112235.

It can be written as a sum of positive squares in 4 ways, for example, as 26832400 + 26388769 = 5180^2 + 5137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53221169 - 2¹⁶ = 53155633 is a prime.

It is a super-2 number, since 2×53221169² = 5664985659453122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53221369) 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, 28634 + ... + 30435.

It is an arithmetic number, because the mean of its divisors is an integer number (7177005).

Almost surely, 2^53221169 is an apocalyptic number.

It is an amenable number.

53221169 is a deficient number, since it is larger than the sum of its proper divisors (4194871).

53221169 is a wasteful number, since it uses less digits than its factorization.

53221169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59139.

The product of its digits is 3240, while the sum is 29.

The square root of 53221169 is about 7295.2840246285. The cubic root of 53221169 is about 376.1503496542.

The spelling of 53221169 in words is "fifty-three million, two hundred twenty-one thousand, one hundred sixty-nine".