51866463 has 8 divisors (see below), whose sum is σ = 75442176. Its totient is φ = 31434200.

The previous prime is 51866461. The next prime is 51866467. The reversal of 51866463 is 36466815.

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

It is a cyclic number.

It is not a de Polignac number, because 51866463 - 2¹ = 51866461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51866461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785823 + ... + 785888.

It is an arithmetic number, because the mean of its divisors is an integer number (9430272).

Almost surely, 2^51866463 is an apocalyptic number.

51866463 is a deficient number, since it is larger than the sum of its proper divisors (23575713).

51866463 is a wasteful number, since it uses less digits than its factorization.

51866463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571725.

The product of its digits is 103680, while the sum is 39.

The square root of 51866463 is about 7201.8374738673. The cubic root of 51866463 is about 372.9313364446.

The spelling of 51866463 in words is "fifty-one million, eight hundred sixty-six thousand, four hundred sixty-three".