454653621 has 16 divisors (see below), whose sum is σ = 680233920. Its totient is φ = 300099600.

The previous prime is 454653613. The next prime is 454653629. The reversal of 454653621 is 126356454.

454653621 is a `hidden beast` number, since 4 + 546 + 53 + 62 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (454653613) and next prime (454653629).

It is not a de Polignac number, because 454653621 - 2³ = 454653613 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454653629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80635 + ... + 86088.

It is an arithmetic number, because the mean of its divisors is an integer number (42514620).

Almost surely, 2^454653621 is an apocalyptic number.

It is an amenable number.

454653621 is a deficient number, since it is larger than the sum of its proper divisors (225580299).

454653621 is a wasteful number, since it uses less digits than its factorization.

454653621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166833 (or 166827 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 454653621 is about 21322.6082128805. The cubic root of 454653621 is about 768.9419442182.

The spelling of 454653621 in words is "four hundred fifty-four million, six hundred fifty-three thousand, six hundred twenty-one".