5191729 has 4 divisors (see below), whose sum is σ = 5332084. Its totient is φ = 5051376.

The previous prime is 5191727. The next prime is 5191741. The reversal of 5191729 is 9271915.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9271915 = 5 ⋅1854383.

It can be written as a sum of positive squares in 2 ways, for example, as 4941729 + 250000 = 2223^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 5191729 - 2¹ = 5191727 is a prime.

It is a Duffinian number.

5191729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5191694 and 5191703.

It is not an unprimeable number, because it can be changed into a prime (5191723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 70122 + ... + 70195.

It is an arithmetic number, because the mean of its divisors is an integer number (1333021).

Almost surely, 2^5191729 is an apocalyptic number.

It is an amenable number.

5191729 is a deficient number, since it is larger than the sum of its proper divisors (140355).

5191729 is a wasteful number, since it uses less digits than its factorization.

5191729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140354.

The product of its digits is 5670, while the sum is 34.

The square root of 5191729 is about 2278.5365917624. The cubic root of 5191729 is about 173.1559176624.

The spelling of 5191729 in words is "five million, one hundred ninety-one thousand, seven hundred twenty-nine".