8355298561 has 4 divisors (see below), whose sum is σ = 8357899012. Its totient is φ = 8352698112.

The previous prime is 8355298559. The next prime is 8355298577. The reversal of 8355298561 is 1658925538.

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 2955988161 + 5399310400 = 54369^2 + 73480^2 .

It is a cyclic number.

It is not a de Polignac number, because 8355298561 - 2¹ = 8355298559 is a prime.

It is a super-2 number, since 2×8355298561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8355298499 and 8355298508.

It is not an unprimeable number, because it can be changed into a prime (8355298961) 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, 1295400 + ... + 1301833.

It is an arithmetic number, because the mean of its divisors is an integer number (2089474753).

Almost surely, 2^8355298561 is an apocalyptic number.

It is an amenable number.

8355298561 is a deficient number, since it is larger than the sum of its proper divisors (2600451).

8355298561 is a wasteful number, since it uses less digits than its factorization.

8355298561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600450.

The product of its digits is 2592000, while the sum is 52.

The square root of 8355298561 is about 91407.3222504631. The cubic root of 8355298561 is about 2029.1803951062.

It can be divided in two parts, 8355 and 298561, that added together give a square (306916 = 554²).

The spelling of 8355298561 in words is "eight billion, three hundred fifty-five million, two hundred ninety-eight thousand, five hundred sixty-one".