45003521 has 2 divisors, whose sum is σ = 45003522. Its totient is φ = 45003520.

The previous prime is 45003467. The next prime is 45003559. The reversal of 45003521 is 12530054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 19044496 = 5095^2 + 4364^2 .

It is a cyclic number.

It is not a de Polignac number, because 45003521 - 2¹⁰ = 45002497 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45003493 and 45003502.

It is not a weakly prime, because it can be changed into another prime (45003221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22501760 + 22501761.

It is an arithmetic number, because the mean of its divisors is an integer number (22501761).

Almost surely, 2^45003521 is an apocalyptic number.

It is an amenable number.

45003521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45003521 is an equidigital number, since it uses as much as digits as its factorization.

45003521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 45003521 is about 6708.4663672109. The cubic root of 45003521 is about 355.6986071117.

Adding to 45003521 its reverse (12530054), we get a palindrome (57533575).

The spelling of 45003521 in words is "forty-five million, three thousand, five hundred twenty-one".