2572165 has 4 divisors (see below), whose sum is σ = 3086604. Its totient is φ = 2057728.

The previous prime is 2572153. The next prime is 2572183. The reversal of 2572165 is 5612752.

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 1205604 + 1366561 = 1098^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572165 - 2⁵ = 2572133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 257212 + ... + 257221.

It is an arithmetic number, because the mean of its divisors is an integer number (771651).

2^2572165 is an apocalyptic number.

It is an amenable number.

2572165 is a deficient number, since it is larger than the sum of its proper divisors (514439).

2572165 is an equidigital number, since it uses as much as digits as its factorization.

2572165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514438.

The product of its digits is 4200, while the sum is 28.

The square root of 2572165 is about 1603.7970569869. The cubic root of 2572165 is about 137.0144194246.

The spelling of 2572165 in words is "two million, five hundred seventy-two thousand, one hundred sixty-five".