53443216 has 10 divisors (see below), whose sum is σ = 103546262. Its totient is φ = 26721600.

The previous prime is 53443211. The next prime is 53443231. The reversal of 53443216 is 61234435.

It can be written as a sum of positive squares in only one way, i.e., 53231616 + 211600 = 7296^2 + 460^2 .

It is not an unprimeable number, because it can be changed into a prime (53443211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670085 + ... + 1670116.

Almost surely, 2^53443216 is an apocalyptic number.

It is an amenable number.

53443216 is a deficient number, since it is larger than the sum of its proper divisors (50103046).

53443216 is a wasteful number, since it uses less digits than its factorization.

53443216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340209 (or 3340203 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 53443216 is about 7310.4867143030. The cubic root of 53443216 is about 376.6727430908.

The spelling of 53443216 in words is "fifty-three million, four hundred forty-three thousand, two hundred sixteen".