51648963 has 8 divisors (see below), whose sum is σ = 68931408. Its totient is φ = 34399584.

The previous prime is 51648959. The next prime is 51648997. The reversal of 51648963 is 36984615.

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

It is not a de Polignac number, because 51648963 - 2² = 51648959 is a prime.

It is a super-3 number, since 3×51648963³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51648463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4356 + ... + 11057.

It is an arithmetic number, because the mean of its divisors is an integer number (8616426).

Almost surely, 2^51648963 is an apocalyptic number.

51648963 is a deficient number, since it is larger than the sum of its proper divisors (17282445).

51648963 is a wasteful number, since it uses less digits than its factorization.

51648963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16533.

The product of its digits is 155520, while the sum is 42.

The square root of 51648963 is about 7186.7212969476. The cubic root of 51648963 is about 372.4093150415.

The spelling of 51648963 in words is "fifty-one million, six hundred forty-eight thousand, nine hundred sixty-three".