51222503242 has 8 divisors (see below), whose sum is σ = 81353387556. Its totient is φ = 24104707392.

The previous prime is 51222503179. The next prime is 51222503249. The reversal of 51222503242 is 24230522215.

It can be written as a sum of positive squares in 2 ways, for example, as 49354621281 + 1867881961 = 222159^2 + 43219^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51222503242.

It is not an unprimeable number, because it can be changed into a prime (51222503249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753272073 + ... + 753272140.

Almost surely, 2^51222503242 is an apocalyptic number.

51222503242 is a deficient number, since it is larger than the sum of its proper divisors (30130884314).

51222503242 is a wasteful number, since it uses less digits than its factorization.

51222503242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506544232.

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 51222503242 in words is "fifty-one billion, two hundred twenty-two million, five hundred three thousand, two hundred forty-two".