5871561 has 4 divisors (see below), whose sum is σ = 7828752. Its totient is φ = 3914372.

The previous prime is 5871559. The next prime is 5871563. The reversal of 5871561 is 1651785.

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 an interprime number because it is at equal distance from previous prime (5871559) and next prime (5871563).

It is a cyclic number.

It is not a de Polignac number, because 5871561 - 2¹ = 5871559 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (5871563) 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, 978591 + ... + 978596.

It is an arithmetic number, because the mean of its divisors is an integer number (1957188).

Almost surely, 2^5871561 is an apocalyptic number.

It is an amenable number.

5871561 is a deficient number, since it is larger than the sum of its proper divisors (1957191).

5871561 is a wasteful number, since it uses less digits than its factorization.

5871561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957190.

The product of its digits is 8400, while the sum is 33.

The square root of 5871561 is about 2423.1304133290. The cubic root of 5871561 is about 180.4060893253.

The spelling of 5871561 in words is "five million, eight hundred seventy-one thousand, five hundred sixty-one".