2453621 has 4 divisors (see below), whose sum is σ = 2464044. Its totient is φ = 2443200.

The previous prime is 2453597. The next prime is 2453629. The reversal of 2453621 is 1263542.

2453621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1661521 + 792100 = 1289^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 2453621 - 2¹⁸ = 2191477 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2453629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4850 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (616011).

2^2453621 is an apocalyptic number.

It is an amenable number.

2453621 is a deficient number, since it is larger than the sum of its proper divisors (10423).

2453621 is a wasteful number, since it uses less digits than its factorization.

2453621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10422.

The product of its digits is 1440, while the sum is 23.

The square root of 2453621 is about 1566.4038432026. The cubic root of 2453621 is about 134.8763568432.

The spelling of 2453621 in words is "two million, four hundred fifty-three thousand, six hundred twenty-one".