2453521 has 4 divisors (see below), whose sum is σ = 2804032. Its totient is φ = 2103012.

The previous prime is 2453519. The next prime is 2453531. The reversal of 2453521 is 1253542.

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 an emirpimes, since its reverse is a distinct semiprime: 1253542 = 2 ⋅626771.

It is a cyclic number.

It is not a de Polignac number, because 2453521 - 2¹ = 2453519 is a prime.

2453521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2453492 and 2453501.

It is not an unprimeable number, because it can be changed into a prime (2453501) 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, 175245 + ... + 175258.

It is an arithmetic number, because the mean of its divisors is an integer number (701008).

2^2453521 is an apocalyptic number.

It is an amenable number.

2453521 is a deficient number, since it is larger than the sum of its proper divisors (350511).

2453521 is an equidigital number, since it uses as much as digits as its factorization.

2453521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350510.

The product of its digits is 1200, while the sum is 22.

The square root of 2453521 is about 1566.3719226288. The cubic root of 2453521 is about 134.8745244739.

The spelling of 2453521 in words is "two million, four hundred fifty-three thousand, five hundred twenty-one".