51313223 has 8 divisors (see below), whose sum is σ = 56086128. Its totient is φ = 46658304.

The previous prime is 51313219. The next prime is 51313231. The reversal of 51313223 is 32231315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51313223 - 2² = 51313219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51313195 and 51313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51319223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28586 + ... + 30327.

It is an arithmetic number, because the mean of its divisors is an integer number (7010766).

Almost surely, 2^51313223 is an apocalyptic number.

51313223 is a deficient number, since it is larger than the sum of its proper divisors (4772905).

51313223 is a wasteful number, since it uses less digits than its factorization.

51313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58993.

The product of its digits is 540, while the sum is 20.

The square root of 51313223 is about 7163.3248565174. The cubic root of 51313223 is about 371.6006211166.

Adding to 51313223 its reverse (32231315), we get a palindrome (83544538).

The spelling of 51313223 in words is "fifty-one million, three hundred thirteen thousand, two hundred twenty-three".