2587971 has 8 divisors (see below), whose sum is σ = 3632320. Its totient is φ = 1634472.

The previous prime is 2587969. The next prime is 2587979. The reversal of 2587971 is 1797852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2587971 - 2¹ = 2587969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2587979) 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 7 ways as a sum of consecutive naturals, for example, 22645 + ... + 22758.

It is an arithmetic number, because the mean of its divisors is an integer number (454040).

2^2587971 is an apocalyptic number.

2587971 is a deficient number, since it is larger than the sum of its proper divisors (1044349).

2587971 is a wasteful number, since it uses less digits than its factorization.

2587971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45425.

The product of its digits is 35280, while the sum is 39.

The square root of 2587971 is about 1608.7171908076. The cubic root of 2587971 is about 137.2944985292.

The spelling of 2587971 in words is "two million, five hundred eighty-seven thousand, nine hundred seventy-one".