5309623561 has 4 divisors (see below), whose sum is σ = 5792316624. Its totient is φ = 4826930500.

The previous prime is 5309623507. The next prime is 5309623573. The reversal of 5309623561 is 1653269035.

It is a happy number.

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 5309623561 - 2⁷ = 5309623433 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5309623591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241346515 + ... + 241346536.

It is an arithmetic number, because the mean of its divisors is an integer number (1448079156).

Almost surely, 2^5309623561 is an apocalyptic number.

It is an amenable number.

5309623561 is a deficient number, since it is larger than the sum of its proper divisors (482693063).

5309623561 is a wasteful number, since it uses less digits than its factorization.

5309623561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482693062.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 5309623561 is about 72867.1638051050. The cubic root of 5309623561 is about 1744.5680341167.

The spelling of 5309623561 in words is "five billion, three hundred nine million, six hundred twenty-three thousand, five hundred sixty-one".