51636463 has 8 divisors (see below), whose sum is σ = 54872208. Its totient is φ = 48422784.

The previous prime is 51636457. The next prime is 51636467. The reversal of 51636463 is 36463615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51636463 is a prime.

It is a super-2 number, since 2×51636463² = 5332648622300738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51636467) 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, 556 + ... + 10177.

It is an arithmetic number, because the mean of its divisors is an integer number (6859026).

Almost surely, 2^51636463 is an apocalyptic number.

51636463 is a deficient number, since it is larger than the sum of its proper divisors (3235745).

51636463 is a wasteful number, since it uses less digits than its factorization.

51636463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11033.

The product of its digits is 38880, while the sum is 34.

The square root of 51636463 is about 7185.8515848854. The cubic root of 51636463 is about 372.3792693139.

The spelling of 51636463 in words is "fifty-one million, six hundred thirty-six thousand, four hundred sixty-three".