2354821 has 4 divisors (see below), whose sum is σ = 2691232. Its totient is φ = 2018412.

The previous prime is 2354819. The next prime is 2354831. The reversal of 2354821 is 1284532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2354821 - 2¹ = 2354819 is a prime.

It is a Duffinian number.

2354821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2354801) 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, 168195 + ... + 168208.

It is an arithmetic number, because the mean of its divisors is an integer number (672808).

2^2354821 is an apocalyptic number.

It is an amenable number.

2354821 is a deficient number, since it is larger than the sum of its proper divisors (336411).

2354821 is an equidigital number, since it uses as much as digits as its factorization.

2354821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336410.

The product of its digits is 1920, while the sum is 25.

The square root of 2354821 is about 1534.5426028625. The cubic root of 2354821 is about 133.0411427918.

The spelling of 2354821 in words is "two million, three hundred fifty-four thousand, eight hundred twenty-one".