45200621 has 2 divisors, whose sum is σ = 45200622. Its totient is φ = 45200620.

The previous prime is 45200599. The next prime is 45200627. The reversal of 45200621 is 12600254.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44222500 + 978121 = 6650^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 45200621 - 2⁶ = 45200557 is a prime.

It is a super-2 number, since 2×45200621² = 4086192277571282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45200593 and 45200602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45200627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22600310 + 22600311.

It is an arithmetic number, because the mean of its divisors is an integer number (22600311).

Almost surely, 2^45200621 is an apocalyptic number.

It is an amenable number.

45200621 is a deficient number, since it is larger than the sum of its proper divisors (1).

45200621 is an equidigital number, since it uses as much as digits as its factorization.

45200621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 45200621 is about 6723.1407095196. The cubic root of 45200621 is about 356.2171301981.

Adding to 45200621 its reverse (12600254), we get a palindrome (57800875).

The spelling of 45200621 in words is "forty-five million, two hundred thousand, six hundred twenty-one".