2353921 has 4 divisors (see below), whose sum is σ = 2356992. Its totient is φ = 2350852.

The previous prime is 2353919. The next prime is 2353927. The reversal of 2353921 is 1293532.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2353921 - 2¹ = 2353919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2353927) 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, 696 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

2^2353921 is an apocalyptic number.

It is an amenable number.

2353921 is a deficient number, since it is larger than the sum of its proper divisors (3071).

2353921 is a wasteful number, since it uses less digits than its factorization.

2353921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its digits is 1620, while the sum is 25.

The square root of 2353921 is about 1534.2493278473. The cubic root of 2353921 is about 133.0241914275.

The spelling of 2353921 in words is "two million, three hundred fifty-three thousand, nine hundred twenty-one".