5259242561 has 4 divisors (see below), whose sum is σ = 5281248000. Its totient is φ = 5237237124.

The previous prime is 5259242531. The next prime is 5259242563. The reversal of 5259242561 is 1652429525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5259242561 - 2¹⁴ = 5259226177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5259242563) 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, 11002361 + ... + 11002838.

It is an arithmetic number, because the mean of its divisors is an integer number (1320312000).

Almost surely, 2^5259242561 is an apocalyptic number.

It is an amenable number.

5259242561 is a deficient number, since it is larger than the sum of its proper divisors (22005439).

5259242561 is a wasteful number, since it uses less digits than its factorization.

5259242561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22005438.

The product of its digits is 216000, while the sum is 41.

The square root of 5259242561 is about 72520.6354150320. The cubic root of 5259242561 is about 1739.0326415997.

The spelling of 5259242561 in words is "five billion, two hundred fifty-nine million, two hundred forty-two thousand, five hundred sixty-one".