2051636 has 12 divisors (see below), whose sum is σ = 3603012. Its totient is φ = 1022208.

The previous prime is 2051629. The next prime is 2051641. The reversal of 2051636 is 6361502.

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 504100 = 1244^2 + 710^2 .

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, 686 + ... + 2138.

It is an arithmetic number, because the mean of its divisors is an integer number (300251).

2^2051636 is an apocalyptic number.

It is an amenable number.

2051636 is a deficient number, since it is larger than the sum of its proper divisors (1551376).

2051636 is a wasteful number, since it uses less digits than its factorization.

2051636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2051636 is about 1432.3533083705. The cubic root of 2051636 is about 127.0671932442.

The spelling of 2051636 in words is "two million, fifty-one thousand, six hundred thirty-six".