53221367 has 2 divisors, whose sum is σ = 53221368. Its totient is φ = 53221366.

The previous prime is 53221361. The next prime is 53221369. The reversal of 53221367 is 76312235.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53221367 - 2⁶ = 53221303 is a prime.

Together with 53221369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53221361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26610683 + 26610684.

It is an arithmetic number, because the mean of its divisors is an integer number (26610684).

Almost surely, 2^53221367 is an apocalyptic number.

53221367 is a deficient number, since it is larger than the sum of its proper divisors (1).

53221367 is an equidigital number, since it uses as much as digits as its factorization.

53221367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 29.

The square root of 53221367 is about 7295.2975950265. The cubic root of 53221367 is about 376.1508161207.

The spelling of 53221367 in words is "fifty-three million, two hundred twenty-one thousand, three hundred sixty-seven".