52505444042 has 4 divisors (see below), whose sum is σ = 78758166066. Its totient is φ = 26252722020.

The previous prime is 52505444009. The next prime is 52505444059. The reversal of 52505444042 is 24044450525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29508024841 + 22997419201 = 171779^2 + 151649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52505443993 and 52505444011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13126361009 + ... + 13126361012.

Almost surely, 2^52505444042 is an apocalyptic number.

52505444042 is a deficient number, since it is larger than the sum of its proper divisors (26252722024).

52505444042 is a wasteful number, since it uses less digits than its factorization.

52505444042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26252722023.

The product of its (nonzero) digits is 128000, while the sum is 35.

Adding to 52505444042 its reverse (24044450525), we get a palindrome (76549894567).

The spelling of 52505444042 in words is "fifty-two billion, five hundred five million, four hundred forty-four thousand, forty-two".