45000521 has 2 divisors, whose sum is σ = 45000522. Its totient is φ = 45000520.

The previous prime is 45000517. The next prime is 45000563. The reversal of 45000521 is 12500054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39187600 + 5812921 = 6260^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 45000521 - 2² = 45000517 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45000521.

It is not a weakly prime, because it can be changed into another prime (45000511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22500260 + 22500261.

It is an arithmetic number, because the mean of its divisors is an integer number (22500261).

Almost surely, 2^45000521 is an apocalyptic number.

It is an amenable number.

45000521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45000521 is an equidigital number, since it uses as much as digits as its factorization.

45000521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 45000521 is about 6708.2427654342. The cubic root of 45000521 is about 355.6907031411.

Adding to 45000521 its reverse (12500054), we get a palindrome (57500575).

The spelling of 45000521 in words is "forty-five million, five hundred twenty-one", and thus it is an aban number.