2571091 has 4 divisors (see below), whose sum is σ = 2602152. Its totient is φ = 2540032.

The previous prime is 2571073. The next prime is 2571113. The reversal of 2571091 is 1901752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2571091 - 2⁵ = 2571059 is a prime.

It is a super-2 number, since 2×2571091² = 13221017860562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2571001) 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, 15406 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (650538).

2^2571091 is an apocalyptic number.

2571091 is a deficient number, since it is larger than the sum of its proper divisors (31061).

2571091 is an equidigital number, since it uses as much as digits as its factorization.

2571091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31060.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2571091 is about 1603.4621916341. The cubic root of 2571091 is about 136.9953467793.

The spelling of 2571091 in words is "two million, five hundred seventy-one thousand, ninety-one".