5155729 has 2 divisors, whose sum is σ = 5155730. Its totient is φ = 5155728.

The previous prime is 5155727. The next prime is 5155753. The reversal of 5155729 is 9275515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 425104 = 2175^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155729 - 2¹ = 5155727 is a prime.

Together with 5155727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5155694 and 5155703.

It is not a weakly prime, because it can be changed into another prime (5155727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577864 + 2577865.

It is an arithmetic number, because the mean of its divisors is an integer number (2577865).

Almost surely, 2^5155729 is an apocalyptic number.

It is an amenable number.

5155729 is a deficient number, since it is larger than the sum of its proper divisors (1).

5155729 is an equidigital number, since it uses as much as digits as its factorization.

5155729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15750, while the sum is 34.

The square root of 5155729 is about 2270.6230422507. The cubic root of 5155729 is about 172.7547618383.

The spelling of 5155729 in words is "five million, one hundred fifty-five thousand, seven hundred twenty-nine".