51506463 has 8 divisors (see below), whose sum is σ = 68749488. Its totient is φ = 34300544.

The previous prime is 51506461. The next prime is 51506471. The reversal of 51506463 is 36460515.

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 51506463 - 2¹ = 51506461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51506463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51506461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5856 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (8593686).

Almost surely, 2^51506463 is an apocalyptic number.

51506463 is a deficient number, since it is larger than the sum of its proper divisors (17243025).

51506463 is a wasteful number, since it uses less digits than its factorization.

51506463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18553.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 51506463 is about 7176.8003316241. The cubic root of 51506463 is about 372.0665059149.

Adding to 51506463 its reverse (36460515), we get a palindrome (87966978).

The spelling of 51506463 in words is "fifty-one million, five hundred six thousand, four hundred sixty-three".