2325821 has 4 divisors (see below), whose sum is σ = 2462652. Its totient is φ = 2188992.

The previous prime is 2325811. The next prime is 2325823. The reversal of 2325821 is 1285232.

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 1792921 + 532900 = 1339^2 + 730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2325821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2325823) 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, 68390 + ... + 68423.

It is an arithmetic number, because the mean of its divisors is an integer number (615663).

2^2325821 is an apocalyptic number.

It is an amenable number.

2325821 is a deficient number, since it is larger than the sum of its proper divisors (136831).

2325821 is a wasteful number, since it uses less digits than its factorization.

2325821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136830.

The product of its digits is 960, while the sum is 23.

The square root of 2325821 is about 1525.0642609412. The cubic root of 2325821 is about 132.4927443517.

The spelling of 2325821 in words is "two million, three hundred twenty-five thousand, eight hundred twenty-one".