2051867 has 8 divisors (see below), whose sum is σ = 2188800. Its totient is φ = 1917864.

The previous prime is 2051851. The next prime is 2051887. The reversal of 2051867 is 7681502.

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 2051867 - 2⁴ = 2051851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051887) 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, 818 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (273600).

2^2051867 is an apocalyptic number.

2051867 is a deficient number, since it is larger than the sum of its proper divisors (136933).

2051867 is a wasteful number, since it uses less digits than its factorization.

2051867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2051867 is about 1432.4339426305. The cubic root of 2051867 is about 127.0719620271.

The spelling of 2051867 in words is "two million, fifty-one thousand, eight hundred sixty-seven".