5081813 has 4 divisors (see below), whose sum is σ = 5543808. Its totient is φ = 4619820.

The previous prime is 5081807. The next prime is 5081819. The reversal of 5081813 is 3181805.

5081813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (5081807) and next prime (5081819).

It is a cyclic number.

It is not a de Polignac number, because 5081813 - 2¹⁴ = 5065429 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5081819) 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, 230981 + ... + 231002.

It is an arithmetic number, because the mean of its divisors is an integer number (1385952).

Almost surely, 2^5081813 is an apocalyptic number.

It is an amenable number.

5081813 is a deficient number, since it is larger than the sum of its proper divisors (461995).

5081813 is a wasteful number, since it uses less digits than its factorization.

5081813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461994.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 5081813 is about 2254.2876923765. The cubic root of 5081813 is about 171.9252086042.

The spelling of 5081813 in words is "five million, eighty-one thousand, eight hundred thirteen".