5257729 has 4 divisors (see below), whose sum is σ = 5439060. Its totient is φ = 5076400.

The previous prime is 5257727. The next prime is 5257741. The reversal of 5257729 is 9277525.

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 4297329 + 960400 = 2073^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257729 - 2¹ = 5257727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5257723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90622 + ... + 90679.

It is an arithmetic number, because the mean of its divisors is an integer number (1359765).

Almost surely, 2^5257729 is an apocalyptic number.

It is an amenable number.

5257729 is a deficient number, since it is larger than the sum of its proper divisors (181331).

5257729 is a wasteful number, since it uses less digits than its factorization.

5257729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181330.

The product of its digits is 44100, while the sum is 37.

The square root of 5257729 is about 2292.9738332567. The cubic root of 5257729 is about 173.8865799797.

The spelling of 5257729 in words is "five million, two hundred fifty-seven thousand, seven hundred twenty-nine".