2571161 has 4 divisors (see below), whose sum is σ = 2614800. Its totient is φ = 2527524.

The previous prime is 2571139. The next prime is 2571181. The reversal of 2571161 is 1611752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2571161 - 2¹⁰ = 2570137 is a prime.

It is a super-2 number, since 2×2571161² = 13221737775842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2571181) by changing a digit.

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, 21731 + ... + 21848.

It is an arithmetic number, because the mean of its divisors is an integer number (653700).

2^2571161 is an apocalyptic number.

It is an amenable number.

2571161 is a deficient number, since it is larger than the sum of its proper divisors (43639).

2571161 is an equidigital number, since it uses as much as digits as its factorization.

2571161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43638.

The product of its digits is 420, while the sum is 23.

The square root of 2571161 is about 1603.4840192531. The cubic root of 2571161 is about 136.9965900371.

The spelling of 2571161 in words is "two million, five hundred seventy-one thousand, one hundred sixty-one".