2121753 has 8 divisors (see below), whose sum is σ = 2995488. Its totient is φ = 1331264.

The previous prime is 2121751. The next prime is 2121761. The reversal of 2121753 is 3571212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121753 - 2¹ = 2121751 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2³ + 1 + 2¹⁹ + 1 + 7 + 5⁵ + 3¹³ .

It is not an unprimeable number, because it can be changed into a prime (2121751) 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, 20751 + ... + 20852.

It is an arithmetic number, because the mean of its divisors is an integer number (374436).

2^2121753 is an apocalyptic number.

It is an amenable number.

2121753 is a deficient number, since it is larger than the sum of its proper divisors (873735).

2121753 is a wasteful number, since it uses less digits than its factorization.

2121753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41623.

The product of its digits is 420, while the sum is 21.

The square root of 2121753 is about 1456.6238361362. The cubic root of 2121753 is about 128.4985641812.

Adding to 2121753 its reverse (3571212), we get a palindrome (5692965).

The spelling of 2121753 in words is "two million, one hundred twenty-one thousand, seven hundred fifty-three".