561613125 has 20 divisors (see below), whose sum is σ = 935725472. Its totient is φ = 299526000.

The previous prime is 561613123. The next prime is 561613193. The reversal of 561613125 is 521316165.

It is not a de Polignac number, because 561613125 - 2¹ = 561613123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561613092 and 561613101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561613123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 147889 + ... + 151638.

Almost surely, 2^561613125 is an apocalyptic number.

It is an amenable number.

561613125 is a deficient number, since it is larger than the sum of its proper divisors (374112347).

561613125 is an equidigital number, since it uses as much as digits as its factorization.

561613125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299550 (or 299535 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 561613125 is about 23698.3781090605. The cubic root of 561613125 is about 825.0477474661.

The spelling of 561613125 in words is "five hundred sixty-one million, six hundred thirteen thousand, one hundred twenty-five".