5131949 has 4 divisors (see below), whose sum is σ = 5138364. Its totient is φ = 5125536.

The previous prime is 5131897. The next prime is 5131961. The reversal of 5131949 is 9491315.

5131949 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 2044900 = 1757^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (1284591).

Almost surely, 2^5131949 is an apocalyptic number.

It is an amenable number.

5131949 is a deficient number, since it is larger than the sum of its proper divisors (6415).

5131949 is an equidigital number, since it uses as much as digits as its factorization.

5131949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414.

The product of its digits is 4860, while the sum is 32.

The square root of 5131949 is about 2265.3805419841. The cubic root of 5131949 is about 172.4887509293.

The spelling of 5131949 in words is "five million, one hundred thirty-one thousand, nine hundred forty-nine".