51223043 has 2 divisors, whose sum is σ = 51223044. Its totient is φ = 51223042.

The previous prime is 51223027. The next prime is 51223049. The reversal of 51223043 is 34032215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51223043 - 2⁴ = 51223027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51223049) 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, 25611521 + 25611522.

It is an arithmetic number, because the mean of its divisors is an integer number (25611522).

Almost surely, 2^51223043 is an apocalyptic number.

51223043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51223043 is an equidigital number, since it uses as much as digits as its factorization.

51223043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 51223043 is about 7157.0275254466. The cubic root of 51223043 is about 371.3828046526.

Adding to 51223043 its reverse (34032215), we get a palindrome (85255258).

The spelling of 51223043 in words is "fifty-one million, two hundred twenty-three thousand, forty-three".