5561161513 has 4 divisors (see below), whose sum is σ = 5802951168. Its totient is φ = 5319371860.

The previous prime is 5561161511. The next prime is 5561161523. The reversal of 5561161513 is 3151611655.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3151611655 = 5 ⋅630322331.

It is a cyclic number.

It is not a de Polignac number, because 5561161513 - 2¹ = 5561161511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561161511) 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, 120894793 + ... + 120894838.

It is an arithmetic number, because the mean of its divisors is an integer number (1450737792).

Almost surely, 2^5561161513 is an apocalyptic number.

It is an amenable number.

5561161513 is a deficient number, since it is larger than the sum of its proper divisors (241789655).

5561161513 is a wasteful number, since it uses less digits than its factorization.

5561161513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241789654.

The product of its digits is 13500, while the sum is 34.

The square root of 5561161513 is about 74573.1956737808. The cubic root of 5561161513 is about 1771.6931369128.

The spelling of 5561161513 in words is "five billion, five hundred sixty-one million, one hundred sixty-one thousand, five hundred thirteen".