2051590 has 16 divisors (see below), whose sum is σ = 3715488. Its totient is φ = 815616.

The previous prime is 2051587. The next prime is 2051593. The reversal of 2051590 is 951502.

It is an interprime number because it is at equal distance from previous prime (2051587) and next prime (2051593).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (232218).

2^2051590 is an apocalyptic number.

2051590 is a deficient number, since it is larger than the sum of its proper divisors (1663898).

2051590 is a wasteful number, since it uses less digits than its factorization.

2051590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2051590 is about 1432.3372507898. The cubic root of 2051590 is about 127.0662435737.

The spelling of 2051590 in words is "two million, fifty-one thousand, five hundred ninety".