2051860 has 12 divisors (see below), whose sum is σ = 4308948. Its totient is φ = 820736.

The previous prime is 2051851. The next prime is 2051887. The reversal of 2051860 is 681502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 806404 = 1116^2 + 898^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51277 + ... + 51316.

It is an arithmetic number, because the mean of its divisors is an integer number (359079).

2^2051860 is an apocalyptic number.

2051860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051860 is an abundant number, since it is smaller than the sum of its proper divisors (2257088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051860 is a wasteful number, since it uses less digits than its factorization.

2051860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102602 (or 102600 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2051860 is about 1432.4314992348. The cubic root of 2051860 is about 127.0718175238.

The spelling of 2051860 in words is "two million, fifty-one thousand, eight hundred sixty".