5455655021 has 2 divisors, whose sum is σ = 5455655022. Its totient is φ = 5455655020.

The previous prime is 5455654991. The next prime is 5455655047. The reversal of 5455655021 is 1205565545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5078130121 + 377524900 = 71261^2 + 19430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5455655021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5455655071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2727827510 + 2727827511.

It is an arithmetic number, because the mean of its divisors is an integer number (2727827511).

Almost surely, 2^5455655021 is an apocalyptic number.

It is an amenable number.

5455655021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5455655021 is an equidigital number, since it uses as much as digits as its factorization.

5455655021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150000, while the sum is 38.

The square root of 5455655021 is about 73862.4060060326. The cubic root of 5455655021 is about 1760.4173232362.

The spelling of 5455655021 in words is "five billion, four hundred fifty-five million, six hundred fifty-five thousand, twenty-one".