51863667 has 8 divisors (see below), whose sum is σ = 69244560. Its totient is φ = 34529280.

The previous prime is 51863663. The next prime is 51863671. The reversal of 51863667 is 76636815.

51863667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51863663) and next prime (51863671).

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

It is not a de Polignac number, because 51863667 - 2² = 51863663 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51863663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8934 + ... + 13547.

It is an arithmetic number, because the mean of its divisors is an integer number (8655570).

Almost surely, 2^51863667 is an apocalyptic number.

51863667 is a deficient number, since it is larger than the sum of its proper divisors (17380893).

51863667 is a wasteful number, since it uses less digits than its factorization.

51863667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23253.

The product of its digits is 181440, while the sum is 42.

The square root of 51863667 is about 7201.6433541241. The cubic root of 51863667 is about 372.9246350381.

The spelling of 51863667 in words is "fifty-one million, eight hundred sixty-three thousand, six hundred sixty-seven".