45245521 has 2 divisors, whose sum is σ = 45245522. Its totient is φ = 45245520.

The previous prime is 45245513. The next prime is 45245527. The reversal of 45245521 is 12554254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43890625 + 1354896 = 6625^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 45245521 - 2³ = 45245513 is a prime.

It is a super-2 number, since 2×45245521² = 4094314341122882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45245521.

It is not a weakly prime, because it can be changed into another prime (45245527) 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, 22622760 + 22622761.

It is an arithmetic number, because the mean of its divisors is an integer number (22622761).

Almost surely, 2^45245521 is an apocalyptic number.

It is an amenable number.

45245521 is a deficient number, since it is larger than the sum of its proper divisors (1).

45245521 is an equidigital number, since it uses as much as digits as its factorization.

45245521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 28.

The square root of 45245521 is about 6726.4790938499. The cubic root of 45245521 is about 356.3350404965.

Adding to 45245521 its reverse (12554254), we get a palindrome (57799775).

The spelling of 45245521 in words is "forty-five million, two hundred forty-five thousand, five hundred twenty-one".