51522454042 has 16 divisors (see below), whose sum is σ = 78168191400. Its totient is φ = 25466510080.

The previous prime is 51522453989. The next prime is 51522454079. The reversal of 51522454042 is 24045422515.

It can be written as a sum of positive squares in 4 ways, for example, as 16365829041 + 35156625001 = 127929^2 + 187501^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51522453989 and 51522454007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917742 + ... + 972262.

Almost surely, 2^51522454042 is an apocalyptic number.

51522454042 is a deficient number, since it is larger than the sum of its proper divisors (26645737358).

51522454042 is a wasteful number, since it uses less digits than its factorization.

51522454042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59921.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 51522454042 its reverse (24045422515), we get a palindrome (75567876557).

The spelling of 51522454042 in words is "fifty-one billion, five hundred twenty-two million, four hundred fifty-four thousand, forty-two".