51922219 has 2 divisors, whose sum is σ = 51922220. Its totient is φ = 51922218.

The previous prime is 51922217. The next prime is 51922261. The reversal of 51922219 is 91222915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51922219 - 2¹ = 51922217 is a prime.

It is a super-2 number, since 2×51922219² = 5391833651767922, which contains 22 as substring.

Together with 51922217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51922217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25961109 + 25961110.

It is an arithmetic number, because the mean of its divisors is an integer number (25961110).

Almost surely, 2^51922219 is an apocalyptic number.

51922219 is a deficient number, since it is larger than the sum of its proper divisors (1).

51922219 is an equidigital number, since it uses as much as digits as its factorization.

51922219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 51922219 is about 7205.7073906730. The cubic root of 51922219 is about 373.0649212443.

The spelling of 51922219 in words is "fifty-one million, nine hundred twenty-two thousand, two hundred nineteen".