51022618 has 8 divisors (see below), whose sum is σ = 76596660. Its totient is φ = 25490400.

The previous prime is 51022607. The next prime is 51022637. The reversal of 51022618 is 81622015.

It can be written as a sum of positive squares in 2 ways, for example, as 51022449 + 169 = 7143^2 + 13^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 51022592 and 51022601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203 + ... + 12406.

Almost surely, 2^51022618 is an apocalyptic number.

51022618 is a deficient number, since it is larger than the sum of its proper divisors (25574042).

51022618 is a wasteful number, since it uses less digits than its factorization.

51022618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20912.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 51022618 is about 7143.0118297536. The cubic root of 51022618 is about 370.8977905658.

The spelling of 51022618 in words is "fifty-one million, twenty-two thousand, six hundred eighteen".