245729 has 8 divisors (see below), whose sum is σ = 272160. Its totient is φ = 220000.

The previous prime is 245723. The next prime is 245741. The reversal of 245729 is 927542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245729 - 2⁸ = 245473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245723) 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 7 ways as a sum of consecutive naturals, for example, 854 + ... + 1104.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2²⁴⁵⁷²⁹ is an apocalyptic number.

It is an amenable number.

245729 is a deficient number, since it is larger than the sum of its proper divisors (26431).

245729 is a wasteful number, since it uses less digits than its factorization.

245729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 5040, while the sum is 29.

The square root of 245729 is about 495.7106010567. The cubic root of 245729 is about 62.6352484479.

It can be divided in two parts, 2457 and 29, that multiplied together give a triangular number (71253 = T₃₇₇).

The spelling of 245729 in words is "two hundred forty-five thousand, seven hundred twenty-nine".