2613200561 has 4 divisors (see below), whose sum is σ = 2613819252. Its totient is φ = 2612581872.

The previous prime is 2613200519. The next prime is 2613200593. The reversal of 2613200561 is 1650023162.

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 276058225 + 2337142336 = 16615^2 + 48344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2613200561 - 2³⁰ = 1539458737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2613200561.

It is not an unprimeable number, because it can be changed into a prime (2613200501) 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, 302966 + ... + 311471.

It is an arithmetic number, because the mean of its divisors is an integer number (653454813).

Almost surely, 2^2613200561 is an apocalyptic number.

It is an amenable number.

2613200561 is a deficient number, since it is larger than the sum of its proper divisors (618691).

2613200561 is an equidigital number, since it uses as much as digits as its factorization.

2613200561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618690.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2613200561 is about 51119.4734029998. The cubic root of 2613200561 is about 1377.3920782641.

The spelling of 2613200561 in words is "two billion, six hundred thirteen million, two hundred thousand, five hundred sixty-one".