51303223 has 4 divisors (see below), whose sum is σ = 51422688. Its totient is φ = 51183760.

The previous prime is 51303221. The next prime is 51303227. The reversal of 51303223 is 32230315.

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 51303223 - 2¹ = 51303221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51303223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51303221) 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, 59086 + ... + 59947.

It is an arithmetic number, because the mean of its divisors is an integer number (12855672).

Almost surely, 2^51303223 is an apocalyptic number.

51303223 is a deficient number, since it is larger than the sum of its proper divisors (119465).

51303223 is a wasteful number, since it uses less digits than its factorization.

51303223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119464.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 51303223 is about 7162.6268226119. The cubic root of 51303223 is about 371.5764801810.

Adding to 51303223 its reverse (32230315), we get a palindrome (83533538).

The spelling of 51303223 in words is "fifty-one million, three hundred three thousand, two hundred twenty-three".