2572909 has 4 divisors (see below), whose sum is σ = 2661660. Its totient is φ = 2484160.

The previous prime is 2572877. The next prime is 2572937. The reversal of 2572909 is 9092752.

2572909 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 1108809 + 1464100 = 1053^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572909 - 2⁵ = 2572877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572939) 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, 44332 + ... + 44389.

It is an arithmetic number, because the mean of its divisors is an integer number (665415).

2^2572909 is an apocalyptic number.

2572909 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2572909 is a deficient number, since it is larger than the sum of its proper divisors (88751).

2572909 is an equidigital number, since it uses as much as digits as its factorization.

2572909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88750.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 2572909 is about 1604.0289897630. The cubic root of 2572909 is about 137.0276286473.

It can be divided in two parts, 2572 and 909, that added together give a square (3481 = 59²).

The spelling of 2572909 in words is "two million, five hundred seventy-two thousand, nine hundred nine".