561615045 has 64 divisors (see below), whose sum is σ = 957775104. Its totient is φ = 280627200.

The previous prime is 561615031. The next prime is 561615049. The reversal of 561615045 is 540516165.

It is not a de Polignac number, because 561615045 - 2⁸ = 561614789 is a prime.

It is a super-2 number, since 2×561615045² = 630822917540704050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 561614997 and 561615015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561615049) 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 63 ways as a sum of consecutive naturals, for example, 2410249 + ... + 2410481.

It is an arithmetic number, because the mean of its divisors is an integer number (14965236).

Almost surely, 2^561615045 is an apocalyptic number.

It is an amenable number.

561615045 is a deficient number, since it is larger than the sum of its proper divisors (396160059).

561615045 is a wasteful number, since it uses less digits than its factorization.

561615045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 561615045 is about 23698.4186181272. The cubic root of 561615045 is about 825.0486876684.

The spelling of 561615045 in words is "five hundred sixty-one million, six hundred fifteen thousand, forty-five".