2136851 has 4 divisors (see below), whose sum is σ = 2143992. Its totient is φ = 2129712.

The previous prime is 2136839. The next prime is 2136853. The reversal of 2136851 is 1586312.

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-2136851 is a prime.

It is a super-2 number, since 2×2136851² = 9132264392402, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 2136851.

It is not an unprimeable number, because it can be changed into a prime (2136853) 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, 3101 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (535998).

2^2136851 is an apocalyptic number.

2136851 is a deficient number, since it is larger than the sum of its proper divisors (7141).

2136851 is an equidigital number, since it uses as much as digits as its factorization.

2136851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140.

The product of its digits is 1440, while the sum is 26.

The square root of 2136851 is about 1461.7971815543. The cubic root of 2136851 is about 128.8026347146.

The spelling of 2136851 in words is "two million, one hundred thirty-six thousand, eight hundred fifty-one".