51982223 has 2 divisors, whose sum is σ = 51982224. Its totient is φ = 51982222.

The previous prime is 51982211. The next prime is 51982253. The reversal of 51982223 is 32228915.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51982223 - 2¹⁰ = 51981199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51982223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51982253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25991111 + 25991112.

It is an arithmetic number, because the mean of its divisors is an integer number (25991112).

Almost surely, 2^51982223 is an apocalyptic number.

51982223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51982223 is an equidigital number, since it uses as much as digits as its factorization.

51982223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 51982223 is about 7209.8698323895. The cubic root of 51982223 is about 373.2085769551.

The spelling of 51982223 in words is "fifty-one million, nine hundred eighty-two thousand, two hundred twenty-three".