53642216 has 8 divisors (see below), whose sum is σ = 100579170. Its totient is φ = 26821104.

The previous prime is 53642209. The next prime is 53642219. The reversal of 53642216 is 61224635.

It can be written as a sum of positive squares in only one way, i.e., 53436100 + 206116 = 7310^2 + 454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×53642216³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (53642219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3352631 + ... + 3352646.

Almost surely, 2^53642216 is an apocalyptic number.

It is an amenable number.

53642216 is a deficient number, since it is larger than the sum of its proper divisors (46936954).

53642216 is a wasteful number, since it uses less digits than its factorization.

53642216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705283 (or 6705279 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 53642216 is about 7324.0846527058. The cubic root of 53642216 is about 377.1396874870.

The spelling of 53642216 in words is "fifty-three million, six hundred forty-two thousand, two hundred sixteen".