51556323 has 48 divisors (see below), whose sum is σ = 86668800. Its totient is φ = 26687232.

The previous prime is 51556313. The next prime is 51556327. The reversal of 51556323 is 32365515.

It is not a de Polignac number, because 51556323 - 2¹⁰ = 51555299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51556327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258978 + ... + 259176.

It is an arithmetic number, because the mean of its divisors is an integer number (1805600).

Almost surely, 2^51556323 is an apocalyptic number.

51556323 is a deficient number, since it is larger than the sum of its proper divisors (35112477).

51556323 is a wasteful number, since it uses less digits than its factorization.

51556323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 295 counting only the distinct ones).

The product of its digits is 13500, while the sum is 30.

The square root of 51556323 is about 7180.2731842180. The cubic root of 51556323 is about 372.1865248540.

The spelling of 51556323 in words is "fifty-one million, five hundred fifty-six thousand, three hundred twenty-three".