51263223 has 12 divisors (see below), whose sum is σ = 75130104. Its totient is φ = 31068400.

The previous prime is 51263189. The next prime is 51263231. The reversal of 51263223 is 32236215.

It is not a de Polignac number, because 51263223 - 2⁹ = 51262711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51263193 and 51263202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70248 + ... + 70973.

It is an arithmetic number, because the mean of its divisors is an integer number (6260842).

Almost surely, 2^51263223 is an apocalyptic number.

51263223 is a deficient number, since it is larger than the sum of its proper divisors (23866881).

51263223 is a wasteful number, since it uses less digits than its factorization.

51263223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141246 (or 141235 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 51263223 is about 7159.8340064557. The cubic root of 51263223 is about 371.4798850563.

Adding to 51263223 its reverse (32236215), we get a palindrome (83499438).

The spelling of 51263223 in words is "fifty-one million, two hundred sixty-three thousand, two hundred twenty-three".