5613181 has 4 divisors (see below), whose sum is σ = 6415072. Its totient is φ = 4811292.

The previous prime is 5613169. The next prime is 5613217. The reversal of 5613181 is 1813165.

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: 1813165 = 5 ⋅362633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5613181 is a prime.

It is a super-2 number, since 2×5613181² = 63015601877522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5613161) 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, 400935 + ... + 400948.

It is an arithmetic number, because the mean of its divisors is an integer number (1603768).

Almost surely, 2^5613181 is an apocalyptic number.

It is an amenable number.

5613181 is a deficient number, since it is larger than the sum of its proper divisors (801891).

5613181 is an equidigital number, since it uses as much as digits as its factorization.

5613181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801890.

The product of its digits is 720, while the sum is 25.

The square root of 5613181 is about 2369.2152709283. The cubic root of 5613181 is about 177.7200181139.

The spelling of 5613181 in words is "five million, six hundred thirteen thousand, one hundred eighty-one".