52542042545 has 8 divisors (see below), whose sum is σ = 66759301224. Its totient is φ = 39561067264.

The previous prime is 52542042493. The next prime is 52542042557. The reversal of 52542042545 is 54524024525.

It can be written as a sum of positive squares in 4 ways, for example, as 7673059216 + 44868983329 = 87596^2 + 211823^2 .

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 52542042545 - 2¹² = 52542038449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52542042499 and 52542042508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309070754 + ... + 309070923.

It is an arithmetic number, because the mean of its divisors is an integer number (8344912653).

Almost surely, 2^52542042545 is an apocalyptic number.

It is an amenable number.

52542042545 is a deficient number, since it is larger than the sum of its proper divisors (14217258679).

52542042545 is a wasteful number, since it uses less digits than its factorization.

52542042545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618141699.

The product of its (nonzero) digits is 320000, while the sum is 38.

The spelling of 52542042545 in words is "fifty-two billion, five hundred forty-two million, forty-two thousand, five hundred forty-five".