5131720 has 64 divisors (see below), whose sum is σ = 12830400. Its totient is φ = 1831680.

The previous prime is 5131697. The next prime is 5131757. The reversal of 5131720 is 271315.

It is an Ulam number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 47026 + ... + 47134.

It is an arithmetic number, because the mean of its divisors is an integer number (200475).

Almost surely, 2^5131720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5131720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6415200).

5131720 is an abundant number, since it is smaller than the sum of its proper divisors (7698680).

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

5131720 is a wasteful number, since it uses less digits than its factorization.

5131720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 5131720 is about 2265.3299980356. The cubic root of 5131720 is about 172.4861852691.

The spelling of 5131720 in words is "five million, one hundred thirty-one thousand, seven hundred twenty".