454525021 has 2 divisors, whose sum is σ = 454525022. Its totient is φ = 454525020.

The previous prime is 454525013. The next prime is 454525081. The reversal of 454525021 is 120525454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453051225 + 1473796 = 21285^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 454525021 - 2³ = 454525013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454525081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227262510 + 227262511.

It is an arithmetic number, because the mean of its divisors is an integer number (227262511).

Almost surely, 2^454525021 is an apocalyptic number.

It is an amenable number.

454525021 is a deficient number, since it is larger than the sum of its proper divisors (1).

454525021 is an equidigital number, since it uses as much as digits as its factorization.

454525021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 454525021 is about 21319.5924210572. The cubic root of 454525021 is about 768.8694382824.

The spelling of 454525021 in words is "four hundred fifty-four million, five hundred twenty-five thousand, twenty-one".