53167221 has 12 divisors (see below), whose sum is σ = 78583648. Its totient is φ = 34620264.

The previous prime is 53167217. The next prime is 53167229. The reversal of 53167221 is 12276135.

It is a happy number.

53167221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53167221 - 2² = 53167217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53167229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68305 + ... + 69078.

Almost surely, 2^53167221 is an apocalyptic number.

It is an amenable number.

53167221 is a deficient number, since it is larger than the sum of its proper divisors (25416427).

53167221 is a wasteful number, since it uses less digits than its factorization.

53167221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137432 (or 137429 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 53167221 is about 7291.5856300259. The cubic root of 53167221 is about 376.0232108993.

The spelling of 53167221 in words is "fifty-three million, one hundred sixty-seven thousand, two hundred twenty-one".