2051633 has 4 divisors (see below), whose sum is σ = 2060388. Its totient is φ = 2042880.

The previous prime is 2051629. The next prime is 2051641. The reversal of 2051633 is 3361502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1827904 + 223729 = 1352^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051633 - 2² = 2051629 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051653) 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, 4016 + ... + 4497.

It is an arithmetic number, because the mean of its divisors is an integer number (515097).

2^2051633 is an apocalyptic number.

It is an amenable number.

2051633 is a deficient number, since it is larger than the sum of its proper divisors (8755).

2051633 is an equidigital number, since it uses as much as digits as its factorization.

2051633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2051633 is about 1432.3522611425. The cubic root of 2051633 is about 127.0671313096.

The spelling of 2051633 in words is "two million, fifty-one thousand, six hundred thirty-three".