454540521 has 4 divisors (see below), whose sum is σ = 606054032. Its totient is φ = 303027012.

The previous prime is 454540511. The next prime is 454540589. The reversal of 454540521 is 125045454.

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.

It is not a de Polignac number, because 454540521 - 2⁷ = 454540393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454540511) 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, 75756751 + ... + 75756756.

It is an arithmetic number, because the mean of its divisors is an integer number (151513508).

Almost surely, 2^454540521 is an apocalyptic number.

It is an amenable number.

454540521 is a deficient number, since it is larger than the sum of its proper divisors (151513511).

454540521 is a wasteful number, since it uses less digits than its factorization.

454540521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151513510.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 454540521 is about 21319.9559333503. The cubic root of 454540521 is about 768.8781780585.

Adding to 454540521 its reverse (125045454), we get a palindrome (579585975).

The spelling of 454540521 in words is "four hundred fifty-four million, five hundred forty thousand, five hundred twenty-one".