455508707021 has 2 divisors, whose sum is σ = 455508707022. Its totient is φ = 455508707020.

The previous prime is 455508707011. The next prime is 455508707047. The reversal of 455508707021 is 120707805554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401841888100 + 53666818921 = 633910^2 + 231661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455508707021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455508707011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227754353510 + 227754353511.

It is an arithmetic number, because the mean of its divisors is an integer number (227754353511).

Almost surely, 2^455508707021 is an apocalyptic number.

It is an amenable number.

455508707021 is a deficient number, since it is larger than the sum of its proper divisors (1).

455508707021 is an equidigital number, since it uses as much as digits as its factorization.

455508707021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392000, while the sum is 44.

The spelling of 455508707021 in words is "four hundred fifty-five billion, five hundred eight million, seven hundred seven thousand, twenty-one".