2261571 has 16 divisors (see below), whose sum is σ = 3284736. Its totient is φ = 1375776.

The previous prime is 2261569. The next prime is 2261573. The reversal of 2261571 is 1751622.

It is an interprime number because it is at equal distance from previous prime (2261569) and next prime (2261573).

It is not a de Polignac number, because 2261571 - 2¹ = 2261569 is a prime.

It is a super-2 number, since 2×2261571² = 10229406776082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3736 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (205296).

2^2261571 is an apocalyptic number.

2261571 is a deficient number, since it is larger than the sum of its proper divisors (1023165).

2261571 is a wasteful number, since it uses less digits than its factorization.

2261571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its digits is 840, while the sum is 24.

The square root of 2261571 is about 1503.8520538936. The cubic root of 2261571 is about 131.2613124036.

The spelling of 2261571 in words is "two million, two hundred sixty-one thousand, five hundred seventy-one".