45663521 has 2 divisors, whose sum is σ = 45663522. Its totient is φ = 45663520.

The previous prime is 45663511. The next prime is 45663539. The reversal of 45663521 is 12536654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24641296 + 21022225 = 4964^2 + 4585^2 .

It is a cyclic number.

It is not a de Polignac number, because 45663521 - 2¹⁰ = 45662497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45663511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22831760 + 22831761.

It is an arithmetic number, because the mean of its divisors is an integer number (22831761).

Almost surely, 2^45663521 is an apocalyptic number.

It is an amenable number.

45663521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45663521 is an equidigital number, since it uses as much as digits as its factorization.

45663521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 45663521 is about 6757.4788937887. The cubic root of 45663521 is about 357.4290103065.

The spelling of 45663521 in words is "forty-five million, six hundred sixty-three thousand, five hundred twenty-one".