2571913 has 4 divisors (see below), whose sum is σ = 2723220. Its totient is φ = 2420608.

The previous prime is 2571911. The next prime is 2571937. The reversal of 2571913 is 3191752.

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 2064969 + 506944 = 1437^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 2571913 - 2¹ = 2571911 is a prime.

It is a super-2 number, since 2×2571913² = 13229472959138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2571911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75628 + ... + 75661.

It is an arithmetic number, because the mean of its divisors is an integer number (680805).

2^2571913 is an apocalyptic number.

It is an amenable number.

2571913 is a deficient number, since it is larger than the sum of its proper divisors (151307).

2571913 is a wasteful number, since it uses less digits than its factorization.

2571913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151306.

The product of its digits is 1890, while the sum is 28.

The square root of 2571913 is about 1603.7184915065. The cubic root of 2571913 is about 137.0099447556.

It can be divided in two parts, 2 and 571913, that added together give a triangular number (571915 = T₁₀₆₉).

The spelling of 2571913 in words is "two million, five hundred seventy-one thousand, nine hundred thirteen".