2170571 has 4 divisors (see below), whose sum is σ = 2337552. Its totient is φ = 2003592.

The previous prime is 2170549. The next prime is 2170573. The reversal of 2170571 is 1750712.

It is a happy number.

2170571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170571 is a prime.

It is a super-2 number, since 2×2170571² = 9422756932082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83471 + ... + 83496.

It is an arithmetic number, because the mean of its divisors is an integer number (584388).

2^2170571 is an apocalyptic number.

2170571 is a deficient number, since it is larger than the sum of its proper divisors (166981).

2170571 is a wasteful number, since it uses less digits than its factorization.

2170571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166980.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 2170571 is about 1473.2857835464. The cubic root of 2170571 is about 129.4766135972.

The spelling of 2170571 in words is "two million, one hundred seventy thousand, five hundred seventy-one".