5113561 has 4 divisors (see below), whose sum is σ = 5238324. Its totient is φ = 4988800.

The previous prime is 5113519. The next prime is 5113573. The reversal of 5113561 is 1653115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1653115 = 5 ⋅330623.

It can be written as a sum of positive squares in 2 ways, for example, as 118336 + 4995225 = 344^2 + 2235^2 .

It is a cyclic number.

It is not a de Polignac number, because 5113561 - 2¹⁵ = 5080793 is a prime.

It is a super-2 number, since 2×5113561² = 52297012201442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5110561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62320 + ... + 62401.

It is an arithmetic number, because the mean of its divisors is an integer number (1309581).

Almost surely, 2^5113561 is an apocalyptic number.

It is an amenable number.

5113561 is a deficient number, since it is larger than the sum of its proper divisors (124763).

5113561 is a wasteful number, since it uses less digits than its factorization.

5113561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124762.

The product of its digits is 450, while the sum is 22.

The square root of 5113561 is about 2261.3184207449. The cubic root of 5113561 is about 172.2824927837.

Adding to 5113561 its reverse (1653115), we get a palindrome (6766676).

The spelling of 5113561 in words is "five million, one hundred thirteen thousand, five hundred sixty-one".