453453521 has 4 divisors (see below), whose sum is σ = 460221552. Its totient is φ = 446685492.

The previous prime is 453453503. The next prime is 453453551. The reversal of 453453521 is 125354354.

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 an emirpimes, since its reverse is a distinct semiprime: 125354354 = 2 ⋅62677177.

It is a cyclic number.

It is not a de Polignac number, because 453453521 - 2⁶ = 453453457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (453453551) 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, 3383915 + ... + 3384048.

It is an arithmetic number, because the mean of its divisors is an integer number (115055388).

Almost surely, 2^453453521 is an apocalyptic number.

It is an amenable number.

453453521 is a deficient number, since it is larger than the sum of its proper divisors (6768031).

453453521 is an equidigital number, since it uses as much as digits as its factorization.

453453521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768030.

The product of its digits is 36000, while the sum is 32.

The square root of 453453521 is about 21294.4481262136. The cubic root of 453453521 is about 768.2647837586.

The spelling of 453453521 in words is "four hundred fifty-three million, four hundred fifty-three thousand, five hundred twenty-one".