51606323 has 4 divisors (see below), whose sum is σ = 52012800. Its totient is φ = 51199848.

The previous prime is 51606311. The next prime is 51606343. The reversal of 51606323 is 32360615.

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 51606323 - 2⁴ = 51606307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51606292 and 51606301.

It is not an unprimeable number, because it can be changed into a prime (51606343) 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, 203048 + ... + 203301.

It is an arithmetic number, because the mean of its divisors is an integer number (13003200).

Almost surely, 2^51606323 is an apocalyptic number.

51606323 is a deficient number, since it is larger than the sum of its proper divisors (406477).

51606323 is a wasteful number, since it uses less digits than its factorization.

51606323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406476.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 51606323 is about 7183.7541021391. The cubic root of 51606323 is about 372.3068031085.

Adding to 51606323 its reverse (32360615), we get a palindrome (83966938).

The spelling of 51606323 in words is "fifty-one million, six hundred six thousand, three hundred twenty-three".