45655021 has 2 divisors, whose sum is σ = 45655022. Its totient is φ = 45655020.

The previous prime is 45655009. The next prime is 45655031. The reversal of 45655021 is 12055654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41139396 + 4515625 = 6414^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 45655021 - 2⁹ = 45654509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45655031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22827510 + 22827511.

It is an arithmetic number, because the mean of its divisors is an integer number (22827511).

Almost surely, 2^45655021 is an apocalyptic number.

It is an amenable number.

45655021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45655021 is an equidigital number, since it uses as much as digits as its factorization.

45655021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 45655021 is about 6756.8499317359. The cubic root of 45655021 is about 357.4068311501.

The spelling of 45655021 in words is "forty-five million, six hundred fifty-five thousand, twenty-one".