2158887 has 8 divisors (see below), whose sum is σ = 2891520. Its totient is φ = 1432760.

The previous prime is 2158859. The next prime is 2158889. The reversal of 2158887 is 7888512.

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

It is a cyclic number.

It is not a de Polignac number, because 2158887 - 2⁶ = 2158823 is a prime.

It is a super-3 number, since 3×2158887³ = 30186376762333110309, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (361440).

2^2158887 is an apocalyptic number.

2158887 is a deficient number, since it is larger than the sum of its proper divisors (732633).

2158887 is a wasteful number, since it uses less digits than its factorization.

2158887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253.

The product of its digits is 35840, while the sum is 39.

The square root of 2158887 is about 1469.3151465904. The cubic root of 2158887 is about 129.2438749409.

The spelling of 2158887 in words is "two million, one hundred fifty-eight thousand, eight hundred eighty-seven".