5126731 has 4 divisors (see below), whose sum is σ = 5131672. Its totient is φ = 5121792.

The previous prime is 5126711. The next prime is 5126747. The reversal of 5126731 is 1376215.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5126731 - 2⁷ = 5126603 is a prime.

It is a super-2 number, since 2×5126731² = 52566741492722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5126696 and 5126705.

It is not an unprimeable number, because it can be changed into a prime (5126701) 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, 246 + ... + 3211.

It is an arithmetic number, because the mean of its divisors is an integer number (1282918).

Almost surely, 2^5126731 is an apocalyptic number.

5126731 is a deficient number, since it is larger than the sum of its proper divisors (4941).

5126731 is a wasteful number, since it uses less digits than its factorization.

5126731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940.

The product of its digits is 1260, while the sum is 25.

The square root of 5126731 is about 2264.2285662009. The cubic root of 5126731 is about 172.4302707741.

It can be divided in two parts, 5 and 126731, that added together give a square (126736 = 356²).

The spelling of 5126731 in words is "five million, one hundred twenty-six thousand, seven hundred thirty-one".