51234223 has 4 divisors (see below), whose sum is σ = 51289840. Its totient is φ = 51178608.

The previous prime is 51234221. The next prime is 51234229. The reversal of 51234223 is 32243215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51234223 - 2¹ = 51234221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51234194 and 51234203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26403 + ... + 28276.

It is an arithmetic number, because the mean of its divisors is an integer number (12822460).

Almost surely, 2^51234223 is an apocalyptic number.

51234223 is a deficient number, since it is larger than the sum of its proper divisors (55617).

51234223 is an equidigital number, since it uses as much as digits as its factorization.

51234223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55616.

The product of its digits is 1440, while the sum is 22.

The square root of 51234223 is about 7157.8085333431. The cubic root of 51234223 is about 371.4098221657.

Adding to 51234223 its reverse (32243215), we get a palindrome (83477438).

The spelling of 51234223 in words is "fifty-one million, two hundred thirty-four thousand, two hundred twenty-three".