51423233 has 4 divisors (see below), whose sum is σ = 52074240. Its totient is φ = 50772228.

The previous prime is 51423209. The next prime is 51423247. The reversal of 51423233 is 33232415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51423233 - 2¹⁰ = 51422209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51423199 and 51423208.

It is not an unprimeable number, because it can be changed into a prime (51423263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325385 + ... + 325542.

It is an arithmetic number, because the mean of its divisors is an integer number (13018560).

Almost surely, 2^51423233 is an apocalyptic number.

It is an amenable number.

51423233 is a deficient number, since it is larger than the sum of its proper divisors (651007).

51423233 is an equidigital number, since it uses as much as digits as its factorization.

51423233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651006.

The product of its digits is 2160, while the sum is 23.

The square root of 51423233 is about 7170.9994421977. Note that the first 3 decimals coincide. The cubic root of 51423233 is about 371.8659887466.

Adding to 51423233 its reverse (33232415), we get a palindrome (84655648).

The spelling of 51423233 in words is "fifty-one million, four hundred twenty-three thousand, two hundred thirty-three".