2152687 has 4 divisors (see below), whose sum is σ = 2162160. Its totient is φ = 2143216.

The previous prime is 2152679. The next prime is 2152691. The reversal of 2152687 is 7862512.

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 2152687 - 2³ = 2152679 is a prime.

It is a super-2 number, since 2×2152687² = 9268122639938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 5³ + 2²¹ + 6⁶ + 8³ + 7² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

2^2152687 is an apocalyptic number.

2152687 is a deficient number, since it is larger than the sum of its proper divisors (9473).

2152687 is an equidigital number, since it uses as much as digits as its factorization.

2152687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9472.

The product of its digits is 6720, while the sum is 31.

The square root of 2152687 is about 1467.2038031576. The cubic root of 2152687 is about 129.1200332988.

The spelling of 2152687 in words is "two million, one hundred fifty-two thousand, six hundred eighty-seven".