2572729 has 4 divisors (see below), whose sum is σ = 2724084. Its totient is φ = 2421376.

The previous prime is 2572699. The next prime is 2572741. The reversal of 2572729 is 9272752.

2572729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2408704 + 164025 = 1552^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572729 - 2⁵ = 2572697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2572694 and 2572703.

It is not an unprimeable number, because it can be changed into a prime (2572769) 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, 75652 + ... + 75685.

It is an arithmetic number, because the mean of its divisors is an integer number (681021).

2^2572729 is an apocalyptic number.

It is an amenable number.

2572729 is a deficient number, since it is larger than the sum of its proper divisors (151355).

2572729 is a wasteful number, since it uses less digits than its factorization.

2572729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151354.

The product of its digits is 17640, while the sum is 34.

The square root of 2572729 is about 1603.9728800700. The cubic root of 2572729 is about 137.0244331012.

The spelling of 2572729 in words is "two million, five hundred seventy-two thousand, seven hundred twenty-nine".