2133651 has 8 divisors (see below), whose sum is σ = 3063760. Its totient is φ = 1312992.

The previous prime is 2133647. The next prime is 2133673. The reversal of 2133651 is 1563312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2133651 - 2² = 2133647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133601) 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, 27316 + ... + 27393.

It is an arithmetic number, because the mean of its divisors is an integer number (382970).

2^2133651 is an apocalyptic number.

2133651 is a deficient number, since it is larger than the sum of its proper divisors (930109).

2133651 is a wasteful number, since it uses less digits than its factorization.

2133651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54725.

The product of its digits is 540, while the sum is 21.

The square root of 2133651 is about 1460.7022283820. The cubic root of 2133651 is about 128.7383072927.

Adding to 2133651 its reverse (1563312), we get a palindrome (3696963).

The spelling of 2133651 in words is "two million, one hundred thirty-three thousand, six hundred fifty-one".