5131806 has 32 divisors (see below), whose sum is σ = 10983168. Its totient is φ = 1594560.

The previous prime is 5131801. The next prime is 5131813. The reversal of 5131806 is 6081315.

5131806 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5205 + ... + 6111.

It is an arithmetic number, because the mean of its divisors is an integer number (343224).

Almost surely, 2^5131806 is an apocalyptic number.

5131806 is an abundant number, since it is smaller than the sum of its proper divisors (5851362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5131806 is a wasteful number, since it uses less digits than its factorization.

5131806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 5131806 is about 2265.3489797380. The cubic root of 5131806 is about 172.4871488011.

The spelling of 5131806 in words is "five million, one hundred thirty-one thousand, eight hundred six".