2597561313 has 4 divisors (see below), whose sum is σ = 3463415088. Its totient is φ = 1731707540.

The previous prime is 2597561299. The next prime is 2597561377. The reversal of 2597561313 is 3131657952.

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 2597561313 - 2⁴ = 2597561297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2597561513) 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, 432926883 + ... + 432926888.

It is an arithmetic number, because the mean of its divisors is an integer number (865853772).

Almost surely, 2^2597561313 is an apocalyptic number.

It is an amenable number.

2597561313 is a deficient number, since it is larger than the sum of its proper divisors (865853775).

2597561313 is an equidigital number, since it uses as much as digits as its factorization.

2597561313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865853774.

The product of its digits is 170100, while the sum is 42.

The square root of 2597561313 is about 50966.2762324265. The cubic root of 2597561313 is about 1374.6388143109.

The spelling of 2597561313 in words is "two billion, five hundred ninety-seven million, five hundred sixty-one thousand, three hundred thirteen".