51648333 has 24 divisors (see below), whose sum is σ = 77846496. Its totient is φ = 30206400.

The previous prime is 51648323. The next prime is 51648353. The reversal of 51648333 is 33384615.

It is not a de Polignac number, because 51648333 - 2⁵ = 51648301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51648294 and 51648303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51648313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26823 + ... + 28683.

It is an arithmetic number, because the mean of its divisors is an integer number (3243604).

Almost surely, 2^51648333 is an apocalyptic number.

It is an amenable number.

51648333 is a deficient number, since it is larger than the sum of its proper divisors (26198163).

51648333 is a wasteful number, since it uses less digits than its factorization.

51648333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1904 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 51648333 is about 7186.6774659783. The cubic root of 51648333 is about 372.4078008529.

Adding to 51648333 its sum of digits (33), we get a triangular number (51648366 = T₁₀₁₆₃).

The spelling of 51648333 in words is "fifty-one million, six hundred forty-eight thousand, three hundred thirty-three".