51650643 has 8 divisors (see below), whose sum is σ = 75128256. Its totient is φ = 31303400.

The previous prime is 51650633. The next prime is 51650659. The reversal of 51650643 is 34605615.

51650643 is nontrivially palindromic in base 4.

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 51650643 - 2⁶ = 51650579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51650643.

It is not an unprimeable number, because it can be changed into a prime (51650623) 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, 782553 + ... + 782618.

It is an arithmetic number, because the mean of its divisors is an integer number (9391032).

Almost surely, 2^51650643 is an apocalyptic number.

51650643 is a deficient number, since it is larger than the sum of its proper divisors (23477613).

51650643 is a wasteful number, since it uses less digits than its factorization.

51650643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565185.

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

The square root of 51650643 is about 7186.8381782255. The cubic root of 51650643 is about 372.4133528178.

The spelling of 51650643 in words is "fifty-one million, six hundred fifty thousand, six hundred forty-three".