52256623561 has 4 divisors (see below), whose sum is σ = 55330542612. Its totient is φ = 49182704512.

The previous prime is 52256623547. The next prime is 52256623567. The reversal of 52256623561 is 16532665225.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19190837961 + 33065785600 = 138531^2 + 181840^2 .

It is a cyclic number.

It is not a de Polignac number, because 52256623561 - 2⁹ = 52256623049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52256623567) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1536959500 + ... + 1536959533.

It is an arithmetic number, because the mean of its divisors is an integer number (13832635653).

Almost surely, 2^52256623561 is an apocalyptic number.

It is an amenable number.

52256623561 is a deficient number, since it is larger than the sum of its proper divisors (3073919051).

52256623561 is a wasteful number, since it uses less digits than its factorization.

52256623561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073919050.

The product of its digits is 648000, while the sum is 43.

The spelling of 52256623561 in words is "fifty-two billion, two hundred fifty-six million, six hundred twenty-three thousand, five hundred sixty-one".